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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The cross section for elastic scattering of 794-MeV neutrons by deuterium has been measured for neutron center of mass angles from 139° to 179°. The angular distribution is fitted very well both by an empirical function αeβ(μ−μ180∘) and by a calculation that uses the one parameter Craigie-Wilkin triangle diagram technique. [NUCLEAR REACTION nH2→H2n, E=794 MeV; measured σ(θ). Calculated σ(θ) with triangle diagram techniques.]
X ERROR H = 12.60 CM. X ERROR D(THETA) = 2.0000 DEG.
The differential cross section for n−p elastic scattering in the angular region 145°<θc.m.<180° has been measured with high statistical accuracy using the monoenergetic neutron beam at Clinton P. Anderson Meson Physics Facility. The results differ significantly from previous Dubna and Princeton-Pennsylvania Accelerator results but agree reasonably well with recent Saclay data except at extreme backward angles.
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We present differential cross-section measurements for π−p elastic scattering in the backward direction, with −0.94>cosθc.m.>−1.0, for eleven beam momenta from 2.15 to 6 GeV/c.
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Final results are presented of the analysis of the elastic channel in an exposure of 40 000 pictures at each of the four incident K + momenta 2.11, 2.31, 2.5 and 2.72 GeV/ c taken in the 1.5 m British National Hydrogen Bubble Chamber at the 8 GeV/ c proton synchrotron at the Rutherford High Energy Laboratory. Differential cross sections are presented and the results are compared with other published data. A Legendre polynomial analysis requires partial waves up to G wave at all momenta. For the backward peak, visible at each momentum, the slope and the intercept are calculated. A comparison of the forward peak is made with extrapolations from Regge models fitted at higher momenta.
RESULTS DIFFER SLIGHTLY FROM THOSE PREVIOUSLY REPORTED IN J. M. BRUNET ET AL., NP B36, 45 (1972).
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The elastic scattering of negative pions on protons at 2.26 GeVc has been studied using the Lawrence Radiation Laboratory 72-in. hydrogen-filled bubble chamber. The elastic scattering cross section is found to be 8.91±0.24 mb. The forward diffraction peak is well fitted by an exponential in the square of the four-momentum transfer, and the slope is found to be 8.8±0.1 GeV−2. The differential cross section is parametrized in terms of three models: optical, strong-absorption, and two-slope. It is found that the two-slope model affords the best description of the data and also does very well in predicting the polarization data of other experiments. The best-fit parameters for all three models are given. In addition, the amplitudes associated with the best fits are given for the strong-absorption and the two-slope models.
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