The spin asymmetryAN for inclusive π0 production by 200-GeV transversely-polarized protons on a liquid hydrogen target has been measured at Fermilab over a wide range ofxF, with 0.5
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False asymmetry calculated for events with average beam polarization of zero.
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The analyzing power AN in inclusive π0 production has been measured with use of the new 185-GeV/c Fermilab polarized proton beam. We obtain the value AN=0.10±0.03 for π0's in the kinematic region 0.2
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Individual polarisation measurements.
We have measured the asymmetry parameter A and the spin correlation parameter A nn in pp elastic scattering, using the Argonne ZGS polarized proton beam and a polarized proton target. Angular distributions of A and A nn for | t | ≳ 0.2 (GeV/ c ) 2 were obtained at eight momenta between 1.10 and 2 if 2.75 GeV/ c . We find significant structure in both the energy and t -dependence of A nn at these energies. At p lab ≈ 1.34 GeV/ c A nn reaches a very large value of about 0.8–0.9 near θ cm = 90°.
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This paper presents the results of a study of the reaction K−d→(ps)Λ0π−. The cross section for the process K−n→Λ0π− has been measured as a function of the center-of-mass energy in the range from 1550 to 1650 MeV. An energy-dependent partial-wave analysis was performed for this reaction, and two acceptable solutions were found. The first solution indicated no resonant structure in this energy range below the Σ(1670). The second solution indicated resonant structure in the S11 partial wave with ER=1600±6 MeV/c2, Γ(ER)=87±19 MeV/c2, and x=0.12±0.02.
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Full angular distributions of the polarization parameter in elastic K+p scattering at 1.37, 1.45, 1.60, 1.71, 1.80, 1.89, 2.11, and 2.31 GeV/c are presented. These data were obtained in an experiment at the Zero Gradient Synchrotron using a polarized proton target with arrays of scintillation and Čerenkov counters to detect the scattered particles.
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