2-MESON DOORWAY MODEL OF LOW-ENERGY ANTIPROTON PROTON ANNIHILATION

MUNDIGL, S and VACAS, MV and WEISE, W (1991) 2-MESON DOORWAY MODEL OF LOW-ENERGY ANTIPROTON PROTON ANNIHILATION. NUCLEAR PHYSICS A, 523 (3-4). pp. 499-516. ISSN 0375-9474,

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Abstract

We investigate a semiclassical model for ppBAR annihilation into any number of pions and kaons at antiproton lab momenta P(lab) < 3 GeV/c, based on the hypothesis of two-meson doorway states as intermediate channels in the annihilation process. All relevant selection rules are incorporated. We find that with baryon radii of about 0.6 fm, the energy dependence of partial cross sections in all important annihilation channels can be reproduced successfully. Angular distributions for ppBAR --> pi-+ pi-- and K+K- can also be described, provided one admits a substantial s-wave suppression in this model.

Item Type: Article
Uncontrolled Keywords: PBARP ANNIHILATION; CROSS-SECTIONS; 2 MESONS; SCATTERING; SEARCH; PION;
Depositing User: Dr. Gernot Deinzer
Last Modified: 19 Oct 2022 08:46
URI: https://pred.uni-regensburg.de/id/eprint/55080

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