Poles and Resonances in the Processπ++p→Σ++K+
- 6 September 1965
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 139 (5B), B1348-B1354
- https://doi.org/10.1103/physrev.139.b1348
Abstract
Several models considered in successively greater degrees of complexity are discussed for the process . The ingredients of the model are and poles, the , 1238-MeV resonance and an resonance at 1925 MeV. Although various combinations of these terms yield generally good results for the total and differential cross sections from threshold (beam momentum of 1021 MeV/c) to 1.76 BeV/c, calculated polarizations are too small. Much better agreement is found with the polarization if the pole terms are multiplied by where is taken to be a constant of magnitude 40-50°. Such a term may arise from the presence of other open channels. The quantum numbers for the 1925-MeV resonance are consistent with the notion that this resonance is a Regge recurrence of the , 1238-MeV state.
Keywords
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