Showing 8 of 8 results
High-statistics differential cross sections for the reactions gamma p -> p eta and gamma p -> p eta-prime have been measured using the CLAS at Jefferson Lab for center-of-mass energies from near threshold up to 2.84 GeV. The eta-prime results are the most precise to date and provide the largest energy and angular coverage. The eta measurements extend the energy range of the world's large-angle results by approximately 300 MeV. These new data, in particular the eta-prime measurements, are likely to help constrain the analyses being performed to search for new baryon resonance states.
Differential cross section for the W range 1.68 to 1.69 GeV.
Differential cross section for the W range 1.69 to 1.70 GeV.
Differential cross section for the W range 1.70 to 1.71 GeV.
Differential cross section for the W range 1.71 to 1.72 GeV.
Differential cross section for the W range 1.72 to 1.73 GeV.
Differential cross section for the W range 1.73 to 1.74 GeV.
Differential cross section for the W range 1.74 to 1.75 GeV.
Differential cross section for the W range 1.75 to 1.76 GeV.
Differential cross section for the W range 1.76 to 1.77 GeV.
Differential cross section for the W range 1.77 to 1.78 GeV.
Differential cross section for the W range 1.78 to 1.79 GeV.
Differential cross section for the W range 1.79 to 1.80 GeV.
Differential cross section for the W range 1.80 to 1.81 GeV.
Differential cross section for the W range 1.81 to 1.82 GeV.
Differential cross section for the W range 1.82 to 1.83 GeV.
Differential cross section for the W range 1.83 to 1.84 GeV.
Differential cross section for the W range 1.84 to 1.85 GeV.
Differential cross section for the W range 1.85 to 1.86 GeV.
Differential cross section for the W range 1.86 to 1.87 GeV.
Differential cross section for the W range 1.87 to 1.88 GeV.
Differential cross section for the W range 1.88 to 1.89 GeV.
Differential cross section for the W range 1.89 to 1.90 GeV.
Differential cross section for the W range 1.90 to 1.91 GeV.
Differential cross section for the W range 1.91 to 1.92 GeV.
Differential cross section for the W range 1.92 to 1.93 GeV.
Differential cross section for the W range 1.93 to 1.94 GeV.
Differential cross section for the W range 1.94 to 1.95 GeV.
Differential cross section for the W range 1.96 to 1.97 GeV.
Differential cross section for the W range 1.97 to 1.98 GeV.
Differential cross section for the W range 1.98 to 1.99 GeV.
Differential cross section for the W range 1.99 to 2.00 GeV.
Differential cross section for the W range 2.00 to 2.01 GeV.
Differential cross section for the W range 2.01 to 2.02 GeV.
Differential cross section for the W range 2.02 to 2.03 GeV.
Differential cross section for the W range 2.03 to 2.04 GeV.
Differential cross section for the W range 2.04 to 2.05 GeV.
Differential cross section for the W range 2.05 to 2.06 GeV.
Differential cross section for the W range 2.06 to 2.07 GeV.
Differential cross section for the W range 2.07 to 2.08 GeV.
Differential cross section for the W range 2.08 to 2.09 GeV.
Differential cross section for the W range 2.09 to 2.10 GeV.
Differential cross section for the W range 2.10 to 2.12 GeV.
Differential cross section for the W range 2.12 to 2.14 GeV.
Differential cross section for the W range 2.14 to 2.16 GeV.
Differential cross section for the W range 2.16 to 2.18 GeV.
Differential cross section for the W range 2.18 to 2.20 GeV.
Differential cross section for the W range 2.20 to 2.22 GeV.
Differential cross section for the W range 2.22 to 2.24 GeV.
Differential cross section for the W range 2.24 to 2.26 GeV.
Differential cross section for the W range 2.26 to 2.28 GeV.
Differential cross section for the W range 2.28 to 2.30 GeV.
Differential cross section for the W range 2.30 to 2.32 GeV.
Differential cross section for the W range 2.32 to 2.34 GeV.
Differential cross section for the W range 2.34 to 2.36 GeV.
Differential cross section for the W range 2.36 to 2.40 GeV.
Differential cross section for the W range 2.40 to 2.44 GeV.
Differential cross section for the W range 2.44 to 2.48 GeV.
Differential cross section for the W range 2.48 to 2.52 GeV.
Differential cross section for the W range 2.52 to 2.56 GeV.
Differential cross section for the W range 2.56 to 2.60 GeV.
Differential cross section for the W range 2.60 to 2.64 GeV.
Differential cross section for the W range 2.64 to 2.68 GeV.
Differential cross section for the W range 2.68 to 2.73 GeV.
Differential cross section for the W range 2.75 to 2.84 GeV.
Differential cross section for the W range 1.92 to 1.93 GeV.
Differential cross section for the W range 1.93 to 1.94 GeV.
Differential cross section for the W range 1.94 to 1.95 GeV.
Differential cross section for the W range 1.96 to 1.97 GeV.
Differential cross section for the W range 1.97 to 1.98 GeV.
Differential cross section for the W range 1.98 to 1.99 GeV.
Differential cross section for the W range 1.99 to 2.00 GeV.
Differential cross section for the W range 2.00 to 2.01 GeV.
Differential cross section for the W range 2.01 to 2.02 GeV.
Differential cross section for the W range 2.02 to 2.03 GeV.
Differential cross section for the W range 2.03 to 2.04 GeV.
Differential cross section for the W range 2.04 to 2.05 GeV.
Differential cross section for the W range 2.05 to 2.06 GeV.
Differential cross section for the W range 2.06 to 2.07 GeV.
Differential cross section for the W range 2.07 to 2.08 GeV.
Differential cross section for the W range 2.08 to 2.09 GeV.
Differential cross section for the W range 2.09 to 2.10 GeV.
Differential cross section for the W range 2.10 to 2.12 GeV.
Differential cross section for the W range 2.12 to 2.14 GeV.
Differential cross section for the W range 2.14 to 2.16 GeV.
Differential cross section for the W range 2.16 to 2.18 GeV.
Differential cross section for the W range 2.18 to 2.20 GeV.
Differential cross section for the W range 2.20 to 2.22 GeV.
Differential cross section for the W range 2.22 to 2.24 GeV.
Differential cross section for the W range 2.24 to 2.26 GeV.
Differential cross section for the W range 2.26 to 2.28 GeV.
Differential cross section for the W range 2.28 to 2.30 GeV.
Differential cross section for the W range 2.30 to 2.32 GeV.
Differential cross section for the W range 2.32 to 2.34 GeV.
Differential cross section for the W range 2.34 to 2.36 GeV.
Differential cross section for the W range 2.36 to 2.40 GeV.
Differential cross section for the W range 2.40 to 2.44 GeV.
Differential cross section for the W range 2.44 to 2.48 GeV.
Differential cross section for the W range 2.48 to 2.52 GeV.
Differential cross section for the W range 2.52 to 2.56 GeV.
Differential cross section for the W range 2.56 to 2.60 GeV.
Differential cross section for the W range 2.60 to 2.64 GeV.
Differential cross section for the W range 2.64 to 2.68 GeV.
Differential cross section for the W range 2.68 to 2.73 GeV.
Differential cross section for the W range 2.75 to 2.84 GeV.
High-statistics differential cross sections and spin density matrix elements for the reaction $\gamma p \to p \omega$ have been measured using the CLAS at Jefferson Lab for center-of-mass (CM) energies from threshold up to 2.84 GeV. Results are reported in 112 10-MeV wide CM energy bins, each subdivided into $\cos{\theta_{CM}^{\omega}}$ bins of width 0.1. These are the most precise and extensive $\omega$ photoproduction measurements to date. A number of prominent structures are clearly present in the data. Many of these have not previously been observed due to limited statistics in earlier measurements.
Differential cross section for the W range 1.72 to 1.73 GeV.
Differential cross section for the W range 1.73 to 1.74 GeV.
Differential cross section for the W range 1.74 to 1.75 GeV.
Differential cross section for the W range 1.75 to 1.76 GeV.
Differential cross section for the W range 1.76 to 1.77 GeV.
Differential cross section for the W range 1.77 to 1.78 GeV.
Differential cross section for the W range 1.78 to 1.79 GeV.
Differential cross section for the W range 1.79 to 1.80 GeV.
Differential cross section for the W range 1.80 to 1.81 GeV.
Differential cross section for the W range 1.81 to 1.82 GeV.
Differential cross section for the W range 1.82 to 1.83 GeV.
Differential cross section for the W range 1.83 to 1.84 GeV.
Differential cross section for the W range 1.84 to 1.85 GeV.
Differential cross section for the W range 1.85 to 1.86 GeV.
Differential cross section for the W range 1.86 to 1.87 GeV.
Differential cross section for the W range 1.87 to 1.88 GeV.
Differential cross section for the W range 1.88 to 1.89 GeV.
Differential cross section for the W range 1.89 to 1.90 GeV.
Differential cross section for the W range 1.90 to 1.91 GeV.
Differential cross section for the W range 1.91 to 1.92 GeV.
Differential cross section for the W range 1.92 to 1.93 GeV.
Differential cross section for the W range 1.93 to 1.94 GeV.
Differential cross section for the W range 1.94 to 1.95 GeV.
Differential cross section for the W range 1.96 to 1.97 GeV.
Differential cross section for the W range 1.97 to 1.98 GeV.
Differential cross section for the W range 1.98 to 1.99 GeV.
Differential cross section for the W range 1.99 to 2.00 GeV.
Differential cross section for the W range 2.00 to 2.01 GeV.
Differential cross section for the W range 2.01 to 2.02 GeV.
Differential cross section for the W range 2.02 to 2.03 GeV.
Differential cross section for the W range 2.03 to 2.04 GeV.
Differential cross section for the W range 2.04 to 2.05 GeV.
Differential cross section for the W range 2.05 to 2.06 GeV.
Differential cross section for the W range 2.06 to 2.07 GeV.
Differential cross section for the W range 2.07 to 2.08 GeV.
Differential cross section for the W range 2.08 to 2.09 GeV.
Differential cross section for the W range 2.09 to 2.10 GeV.
Differential cross section for the W range 2.10 to 2.11 GeV.
Differential cross section for the W range 2.11 to 2.12 GeV.
Differential cross section for the W range 2.12 to 2.13 GeV.
Differential cross section for the W range 2.13 to 2.14 GeV.
Differential cross section for the W range 2.14 to 2.15 GeV.
Differential cross section for the W range 2.15 to 2.16 GeV.
Differential cross section for the W range 2.16 to 2.17 GeV.
Differential cross section for the W range 2.17 to 2.18 GeV.
Differential cross section for the W range 2.18 to 2.19 GeV.
Differential cross section for the W range 2.19 to 2.20 GeV.
Differential cross section for the W range 2.20 to 2.21 GeV.
Differential cross section for the W range 2.21 to 2.22 GeV.
Differential cross section for the W range 2.22 to 2.23 GeV.
Differential cross section for the W range 2.23 to 2.24 GeV.
Differential cross section for the W range 2.24 to 2.25 GeV.
Differential cross section for the W range 2.25 to 2.26 GeV.
Differential cross section for the W range 2.26 to 2.27 GeV.
Differential cross section for the W range 2.27 to 2.28 GeV.
Differential cross section for the W range 2.28 to 2.29 GeV.
Differential cross section for the W range 2.29 to 2.30 GeV.
Differential cross section for the W range 2.30 to 2.31 GeV.
Differential cross section for the W range 2.31 to 2.32 GeV.
Differential cross section for the W range 2.32 to 2.33 GeV.
Differential cross section for the W range 2.33 to 2.34 GeV.
Differential cross section for the W range 2.34 to 2.35 GeV.
Differential cross section for the W range 2.35 to 2.36 GeV.
Differential cross section for the W range 2.36 to 2.37 GeV.
Differential cross section for the W range 2.37 to 2.38 GeV.
Differential cross section for the W range 2.38 to 2.39 GeV.
Differential cross section for the W range 2.39 to 2.40 GeV.
Differential cross section for the W range 2.40 to 2.41 GeV.
Differential cross section for the W range 2.41 to 2.42 GeV.
Differential cross section for the W range 2.42 to 2.43 GeV.
Differential cross section for the W range 2.43 to 2.44 GeV.
Differential cross section for the W range 2.44 to 2.45 GeV.
Differential cross section for the W range 2.45 to 2.46 GeV.
Differential cross section for the W range 2.46 to 2.47 GeV.
Differential cross section for the W range 2.47 to 2.48 GeV.
Differential cross section for the W range 2.48 to 2.49 GeV.
Differential cross section for the W range 2.49 to 2.50 GeV.
Differential cross section for the W range 2.50 to 2.51 GeV.
Differential cross section for the W range 2.51 to 2.52 GeV.
Differential cross section for the W range 2.52 to 2.53 GeV.
Differential cross section for the W range 2.53 to 2.54 GeV.
Differential cross section for the W range 2.54 to 2.55 GeV.
Differential cross section for the W range 2.55 to 2.56 GeV.
Differential cross section for the W range 2.56 to 2.57 GeV.
Differential cross section for the W range 2.57 to 2.58 GeV.
Differential cross section for the W range 2.58 to 2.59 GeV.
Differential cross section for the W range 2.59 to 2.60 GeV.
Differential cross section for the W range 2.60 to 2.61 GeV.
Differential cross section for the W range 2.61 to 2.62 GeV.
Differential cross section for the W range 2.62 to 2.63 GeV.
Differential cross section for the W range 2.63 to 2.64 GeV.
Differential cross section for the W range 2.64 to 2.65 GeV.
Differential cross section for the W range 2.65 to 2.66 GeV.
Differential cross section for the W range 2.66 to 2.67 GeV.
Differential cross section for the W range 2.67 to 2.68 GeV.
Differential cross section for the W range 2.68 to 2.69 GeV.
Differential cross section for the W range 2.69 to 2.70 GeV.
Differential cross section for the W range 2.70 to 2.71 GeV.
Differential cross section for the W range 2.71 to 2.72 GeV.
Differential cross section for the W range 2.72 to 2.73 GeV.
Differential cross section for the W range 2.75 to 2.76 GeV.
Differential cross section for the W range 2.76 to 2.77 GeV.
Differential cross section for the W range 2.77 to 2.78 GeV.
Differential cross section for the W range 2.78 to 2.79 GeV.
Differential cross section for the W range 2.79 to 2.80 GeV.
Differential cross section for the W range 2.80 to 2.81 GeV.
Differential cross section for the W range 2.81 to 2.82 GeV.
Differential cross section for the W range 2.82 to 2.83 GeV.
Differential cross section for the W range 2.83 to 2.84 GeV.
Spin density matrix elements for the W range 1.72 to 1.73 GeV.
Spin density matrix elements for the W range 1.73 to 1.74 GeV.
Spin density matrix elements for the W range 1.74 to 1.75 GeV.
Spin density matrix elements for the W range 1.75 to 1.76 GeV.
Spin density matrix elements for the W range 1.76 to 1.77 GeV.
Spin density matrix elements for the W range 1.77 to 1.78 GeV.
Spin density matrix elements for the W range 1.78 to 1.79 GeV.
Spin density matrix elements for the W range 1.79 to 1.80 GeV.
Spin density matrix elements for the W range 1.80 to 1.81 GeV.
Spin density matrix elements for the W range 1.81 to 1.82 GeV.
Spin density matrix elements for the W range 1.82 to 1.83 GeV.
Spin density matrix elements for the W range 1.83 to 1.84 GeV.
Spin density matrix elements for the W range 1.84 to 1.85 GeV.
Spin density matrix elements for the W range 1.85 to 1.86 GeV.
Spin density matrix elements for the W range 1.86 to 1.87 GeV.
Spin density matrix elements for the W range 1.87 to 1.88 GeV.
Spin density matrix elements for the W range 1.88 to 1.89 GeV.
Spin density matrix elements for the W range 1.89 to 1.90 GeV.
Spin density matrix elements for the W range 1.90 to 1.91 GeV.
Spin density matrix elements for the W range 1.91 to 1.92 GeV.
Spin density matrix elements for the W range 1.92 to 1.93 GeV.
Spin density matrix elements for the W range 1.93 to 1.94 GeV.
Spin density matrix elements for the W range 1.94 to 1.95 GeV.
Spin density matrix elements for the W range 1.95 to 1.96 GeV.
Spin density matrix elements for the W range 1.96 to 1.97 GeV.
Spin density matrix elements for the W range 1.97 to 1.98 GeV.
Spin density matrix elements for the W range 1.98 to 1.99 GeV.
Spin density matrix elements for the W range 1.99 to 2.00 GeV.
Spin density matrix elements for the W range 2.00 to 2.01 GeV.
Spin density matrix elements for the W range 2.01 to 2.02 GeV.
Spin density matrix elements for the W range 2.02 to 2.03 GeV.
Spin density matrix elements for the W range 2.03 to 2.04 GeV.
Spin density matrix elements for the W range 2.04 to 2.05 GeV.
Spin density matrix elements for the W range 2.05 to 2.06 GeV.
Spin density matrix elements for the W range 2.06 to 2.07 GeV.
Spin density matrix elements for the W range 2.07 to 2.08 GeV.
Spin density matrix elements for the W range 2.08 to 2.09 GeV.
Spin density matrix elements for the W range 2.09 to 2.10 GeV.
Spin density matrix elements for the W range 2.10 to 2.11 GeV.
Spin density matrix elements for the W range 2.11 to 2.12 GeV.
Spin density matrix elements for the W range 2.12 to 2.13 GeV.
Spin density matrix elements for the W range 2.13 to 2.14 GeV.
Spin density matrix elements for the W range 2.14 to 2.15 GeV.
Spin density matrix elements for the W range 2.15 to 2.16 GeV.
Spin density matrix elements for the W range 2.16 to 2.17 GeV.
Spin density matrix elements for the W range 2.17 to 2.18 GeV.
Spin density matrix elements for the W range 2.18 to 2.19 GeV.
Spin density matrix elements for the W range 2.19 to 2.20 GeV.
Spin density matrix elements for the W range 2.20 to 2.21 GeV.
Spin density matrix elements for the W range 2.21 to 2.22 GeV.
Spin density matrix elements for the W range 2.22 to 2.23 GeV.
Spin density matrix elements for the W range 2.23 to 2.24 GeV.
Spin density matrix elements for the W range 2.24 to 2.25 GeV.
Spin density matrix elements for the W range 2.25 to 2.26 GeV.
Spin density matrix elements for the W range 2.26 to 2.27 GeV.
Spin density matrix elements for the W range 2.27 to 2.28 GeV.
Spin density matrix elements for the W range 2.28 to 2.29 GeV.
Spin density matrix elements for the W range 2.29 to 2.30 GeV.
Spin density matrix elements for the W range 2.30 to 2.31 GeV.
Spin density matrix elements for the W range 2.31 to 2.32 GeV.
Spin density matrix elements for the W range 2.32 to 2.33 GeV.
Spin density matrix elements for the W range 2.33 to 2.34 GeV.
Spin density matrix elements for the W range 2.34 to 2.35 GeV.
Spin density matrix elements for the W range 2.35 to 2.36 GeV.
Spin density matrix elements for the W range 2.36 to 2.37 GeV.
Spin density matrix elements for the W range 2.37 to 2.38 GeV.
Spin density matrix elements for the W range 2.38 to 2.39 GeV.
Spin density matrix elements for the W range 2.39 to 2.40 GeV.
Spin density matrix elements for the W range 2.40 to 2.41 GeV.
Spin density matrix elements for the W range 2.41 to 2.42 GeV.
Spin density matrix elements for the W range 2.42 to 2.43 GeV.
Spin density matrix elements for the W range 2.43 to 2.44 GeV.
Spin density matrix elements for the W range 2.44 to 2.45 GeV.
Spin density matrix elements for the W range 2.45 to 2.46 GeV.
Spin density matrix elements for the W range 2.46 to 2.47 GeV.
Spin density matrix elements for the W range 2.47 to 2.48 GeV.
Spin density matrix elements for the W range 2.48 to 2.49 GeV.
Spin density matrix elements for the W range 2.49 to 2.50 GeV.
Spin density matrix elements for the W range 2.50 to 2.51 GeV.
Spin density matrix elements for the W range 2.51 to 2.52 GeV.
Spin density matrix elements for the W range 2.52 to 2.53 GeV.
Spin density matrix elements for the W range 2.53 to 2.54 GeV.
Spin density matrix elements for the W range 2.54 to 2.55 GeV.
Spin density matrix elements for the W range 2.55 to 2.56 GeV.
Spin density matrix elements for the W range 2.56 to 2.57 GeV.
Spin density matrix elements for the W range 2.57 to 2.58 GeV.
Spin density matrix elements for the W range 2.58 to 2.59 GeV.
Spin density matrix elements for the W range 2.59 to 2.60 GeV.
Spin density matrix elements for the W range 2.60 to 2.61 GeV.
Spin density matrix elements for the W range 2.61 to 2.62 GeV.
Spin density matrix elements for the W range 2.62 to 2.63 GeV.
Spin density matrix elements for the W range 2.63 to 2.64 GeV.
Spin density matrix elements for the W range 2.64 to 2.65 GeV.
Spin density matrix elements for the W range 2.65 to 2.66 GeV.
Spin density matrix elements for the W range 2.66 to 2.67 GeV.
Spin density matrix elements for the W range 2.67 to 2.68 GeV.
Spin density matrix elements for the W range 2.68 to 2.69 GeV.
Spin density matrix elements for the W range 2.69 to 2.70 GeV.
Spin density matrix elements for the W range 2.70 to 2.71 GeV.
Spin density matrix elements for the W range 2.71 to 2.72 GeV.
Spin density matrix elements for the W range 2.72 to 2.73 GeV.
Spin density matrix elements for the W range 2.73 to 2.74 GeV.
Spin density matrix elements for the W range 2.74 to 2.75 GeV.
Spin density matrix elements for the W range 2.75 to 2.76 GeV.
Spin density matrix elements for the W range 2.76 to 2.77 GeV.
Spin density matrix elements for the W range 2.77 to 2.78 GeV.
Spin density matrix elements for the W range 2.78 to 2.79 GeV.
Spin density matrix elements for the W range 2.79 to 2.80 GeV.
Spin density matrix elements for the W range 2.80 to 2.81 GeV.
Spin density matrix elements for the W range 2.81 to 2.82 GeV.
Spin density matrix elements for the W range 2.82 to 2.83 GeV.
Spin density matrix elements for the W range 2.83 to 2.84 GeV.
The ep -> e'pi^+n reaction was studied in the first and second nucleon resonance regions in the 0.25 GeV^2 < Q^2 < 0.65 GeV^2 range using the CLAS detector at Thomas Jefferson National Accelerator Facility. For the first time the absolute cross sections were measured covering nearly the full angular range in the hadronic center-of-mass frame. The structure functions sigma_TL, sigma_TT and the linear combination sigma_T+epsilon*sigma_L were extracted by fitting the phi-dependence of the measured cross sections, and were compared to the MAID and Sato-Lee models.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.11 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.13 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.15 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.17 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.19 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.21 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.23 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.25 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.27 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.29 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.31 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.33 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.35 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.37 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.39 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.41 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.43 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.45 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.47 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.49 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.51 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.53 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.55 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.57 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.11 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.13 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.15 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.17 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.19 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.21 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.23 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.25 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.27 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.29 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.31 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.33 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.35 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.37 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.39 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.41 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.43 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.45 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.47 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.49 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.51 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.53 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.55 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.11 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.13 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.15 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.17 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.19 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.21 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.23 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.25 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.27 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.29 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.31 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.33 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.35 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.37 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.39 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.41 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.43 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.45 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.47 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.49 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.51 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.11 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.13 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.15 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.17 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.19 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.21 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.23 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.25 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.27 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.29 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.31 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.33 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.35 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.37 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.39 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.41 GeV.
Cross sections for W = 1.11 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 157.5 deg.
The longitudinal and transverse components of the cross section for the $e p\to e^\prime p \rho^0$ reaction were measured in Hall B at Jefferson Laboratory using the CLAS detector. The data were taken with a 4.247 GeV electron beam and were analyzed in a range of $x_B$ from 0.2 to 0.6 and of $Q^2$ from 1.5 to 3.0 GeV$^2$. The data are compared to a Regge model based on effective hadronic degrees of freedom and to a calculation based on Generalized Parton Distributions. It is found that the transverse part of the cross section is well described by the former approach while the longitudinal part can be reproduced by the latter.
The ratio of the longitudinal to transverse cross sections for two Q**2 regions.
The longitudinal and transverse cross sections as a function of Q**2 for X Bjorken = 0.31.
The longitudinal and transverse cross sections as a function of Q**2 for X Bjorken = 0.38.
The longitudinal and transverse cross sections as a function of Q**2 for X Bjorken = 0.45.
The longitudinal and transverse cross sections as a function of Q**2 for X Bjorken = 0.52.
The cross section for the reaction $ e p \to e^{\prime} p \pi^{+} \pi^{-}$ was measured in the resonance region for 1.4$<$W$<$2.1 GeV and 0.5$<Q^{2}<$1.5 GeV$^{2}$/c$^{2}$ using the CLAS detector at Jefferson Laboratory. The data shows resonant structures not visible in previous experiments. The comparison of our data to a phenomenological prediction using available information on $N^{*}$ and $\Delta$ states shows an evident discrepancy. A better description of the data is obtained either by a sizeable change of the properties of the $P_{13}$(1720) resonance or by introducing a new baryon state, not reported in published analyses.
Measured cross section DSIG/DM(PI+PI-) for the W range 1400 to 1425GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1425 to 1450GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1450 to 1475GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1475 to 1500GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1500 to 1525GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1525 to 1550GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1550 to 1575GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1575 to 1600GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1600 to 1625GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1625 to 1650GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1650 to 1675GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1675 to 1700GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1700 to 1725GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1725 to 1750GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1750 to 1775GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1775 to 1800GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1800 to 1825GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1825 to 1850GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1850 to 1875GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1875 to 1900GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1900 to 1925GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1925 to 1950GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1950 to 1975GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 1975 to 2000GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 2000 to 2025GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 2025 to 2050GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 2050 to 2075GeV.
Measured cross section DSIG/DM(PI+PI-) for the W range 2075 to 2100GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1400 to 1425GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1425 to 1450GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1450 to 1475GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1475 to 1500GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1500 to 1525GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1525 to 1550GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1550 to 1575GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1575 to 1600GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1600 to 1625GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1625 to 1650GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1650 to 1675GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1675 to 1700GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1700 to 1725GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1725 to 1750GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1750 to 1775GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1775 to 1800GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1800 to 1825GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1825 to 1850GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1850 to 1875GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1875 to 1900GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1900 to 1925GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1925 to 1950GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1950 to 1975GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 1975 to 2000GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 2000 to 2025GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 2025 to 2050GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 2050 to 2075GeV.
Measured cross section DSIG/DM(PI+Proton) for the W range 2075 to 2100GeV.
Measured c.m. angular distribution of the PI- for the W range 1400 to 1425GeV.
Measured c.m. angular distribution of the PI- for the W range 1425 to 1450GeV.
Measured c.m. angular distribution of the PI- for the W range 1450 to 1475GeV.
Measured c.m. angular distribution of the PI- for the W range 1475 to 1500GeV.
Measured c.m. angular distribution of the PI- for the W range 1500 to 1525GeV.
Measured c.m. angular distribution of the PI- for the W range 1525 to 1550GeV.
Measured c.m. angular distribution of the PI- for the W range 1550 to 1575GeV.
Measured c.m. angular distribution of the PI- for the W range 1575 to 1600GeV.
Measured c.m. angular distribution of the PI- for the W range 1600 to 1625GeV.
Measured c.m. angular distribution of the PI- for the W range 1625 to 1650GeV.
Measured c.m. angular distribution of the PI- for the W range 1650 to 1675GeV.
Measured c.m. angular distribution of the PI- for the W range 1675 to 1700GeV.
Measured c.m. angular distribution of the PI- for the W range 1700 to 1725GeV.
Measured c.m. angular distribution of the PI- for the W range 1725 to 1750GeV.
Measured c.m. angular distribution of the PI- for the W range 1750 to 1775GeV.
Measured c.m. angular distribution of the PI- for the W range 1775 to 1800GeV.
Measured c.m. angular distribution of the PI- for the W range 1800 to 1825GeV.
Measured c.m. angular distribution of the PI- for the W range 1825 to 1850GeV.
Measured c.m. angular distribution of the PI- for the W range 1850 to 1875GeV.
Measured c.m. angular distribution of the PI- for the W range 1875 to 1900GeV.
Measured c.m. angular distribution of the PI- for the W range 1900 to 1925GeV.
Measured c.m. angular distribution of the PI- for the W range 1925 to 1950GeV.
Measured c.m. angular distribution of the PI- for the W range 1950 to 1975GeV.
Measured c.m. angular distribution of the PI- for the W range 1975 to 2000GeV.
Measured c.m. angular distribution of the PI- for the W range 2000 to 2025GeV.
Measured c.m. angular distribution of the PI- for the W range 2025 to 2050GeV.
Measured c.m. angular distribution of the PI- for the W range 2050 to 2075GeV.
Measured c.m. angular distribution of the PI- for the W range 2075 to 2100GeV.
Results are presented on the exclusive production of four-prong final states in photon-photon collisions from the TPC/Two-Gamma detector at the SLAC e+e− storage ring PEP. Measurement of dE/dx and momentum in the time-projection chamber (TPC) provides identification of the final states 2π+2π−, K+K−π+π−, and 2K+2K−. For two quasireal incident photons, both the 2π+2π− and K+K−π+π− cross sections show a steep rise from threshold to a peak value, followed by a decrease at higher mass. Cross sections for the production of the final states ρ0ρ0, ρ0π+π−, and φπ+π− are presented, together with upper limits for φρ0, φφ, and K*0K¯ *0. The ρ0ρ0 contribution dominates the four-pion cross section at low masses, but falls to nearly zero above 2 GeV. Such behavior is inconsistent with expectations from vector dominance but can be accommodated by four-quark resonance models or by t-channel factorization. Angular distributions for the part of the data dominated by ρ0ρ0 final states are consistent with the production of JP=2+ or 0+ resonances but also with isotropic (nonresonant) production. When one of the virtual photons has mass (mγ2=-Q2≠0), the four-pion cross section is still dominated by ρ0ρ0 at low final-state masses Wγγ and by 2π+2π− at higher mass. Further, the dependence of the cross section on Q2 becomes increasingly flat as Wγγ increases.
UNTAGGED DATA.
TAGGED DATA, RESULTS OBTAINED USING TRANSVERSE-TRANSVERSE LUMINOSITY ONLY. DATA FOR Q2=0 ARE FROM UNTAGGED SAMPLE, ERRORS DUE TO RELATIVE NORMALISATION OF THESE SAMPLES IS INCLUDED INTO ERRORS QUOTED.
UNTAGGED DATA.
UNTAGGED DATA.
UNTAGGED DATA. DATA REPRESENT TWO ENTRIES FOR EACH EVENT WEIGHTED BY THE RHO0 RHO0 MATRIX ELEMENT (PROPORTIONAL TO THE SUM OF TWO BREIGHT-WIGNER BUMPS). THIS PROCEDURE IS ASSUMED TO DECREASE BACKGROUND FROM RHO PI PI AND 4PI STATES TO A LEVEL OF 0.1-0.15.
UNTAGGED DATA. DATA REPRESENT TWO ENTRIES FOR EACH EVENT WEIGHTED BY THE RHO0 RHO0 MATRIX ELEMENT (PROPORTIONAL TO THE SUM OF TWO BREIGHT-WIGNER BUMPS). THIS PROCEDURE IS ASSUMED TO DECREASE BACKGROUND FROM RHO PI PI AND 4PI STATES TO A LEVEL OF 0.1-0.15.
UNTAGGED DATA. DATA REPRESENT TWO ENTRIES FOR EACH EVENT WEIGHTED BY THE RHO0 RHO0 MATRIX ELEMENT (PROPORTIONAL TO THE SUM OF TWO BREIGHT-WIGNER BUMPS). THIS PROCEDURE IS ASSUMED TO DECREASE BACKGROUND FROM RHO PI PI AND 4PI STATES TO A LEVEL OF 0.1-0.15.
UNTAGGED DATA. DATA REPRESENT TWO ENTRIES FOR EACH EVENT WEIGHTED BY THE RHO0 RHO0 MATRIX ELEMENT (PROPORTIONAL TO THE SUM OF TWO BREIGHT-WIGNER BUMPS). THIS PROCEDURE IS ASSUMED TO DECREASE BACKGROUND FROM RHO PI PI AND 4PI STATES TO A LEVEL OF 0.1-0.15.
UNTAGGED DATA.
UNTAGGED DATA.
UNTAGGED DATA.
TAGGED DATA, RESULTS OBTAINED USING TRANSVERSE-TRANSVERSE LUMINOSITY ONLY. DATA FOR Q2=0 ARE FROM UNTAGGED SAMPLE, ERRORS DUE TO RELATIVE NORMALISATION OF THESE SAMPLES IS INCLUDED INTO ERRORS QUOTED.
We report measurements of the two-photon processes e+e−→e+e−π+π− and e+e−→e+e−K+K−, at an e+e− center-of-mass energy of 29 GeV. In the π+π− data a high-statistics analysis of the f(1270) results in a γγ width Γ(γγ→f)=3.2±0.4 keV. The π+π− continuum below the f mass is well described by a QED Born approximation, whereas above the f mass it is consistent with a QCD-model calculation if a large contribution from the f is assumed. For the K+K− data we find agreement of the high-mass continuum with the QCD prediction; limits on f′(1520) and θ(1720) formation are presented.
Data read from graph. Additional overall systematic error 20% not included.
Data read from graph.. Additional overall systematic error 20% not included.
Data read from graph.. Additional overall systematic error 20% not included.. The Q**2 dependence is normalized to unity for the bin centred on Q**2 = 0.
Data read from graph. Additional overall systematic error 20% not included.
Data read from graph. Additional overall systematic error 20% not included.
We report a measurement of the reaction γγ→K+K−π+π− in both tagged and untagged events at PEP. The cross section rises with invariant γγ mass to about 15 nb at 2 GeV and falls slowly at higher masses. We find clear evidence for the processes γγ→φπ+π− and γγ→K*0(892)Kπ. Upper limits (95% C.L.) of 1.5 and 5.7 nb in the mass range from 1.7 to 3.7 GeV are obtained for φρ0 and K*0K¯*0 production, respectively.
No description provided.
No description provided.
Untagged sample, (non-resonant).
Untagged sample.
Untagged sample.
Untagged sample.
Tagged sample.
Tagged sample.
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