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Analysis of double-scattering mechanisms in p-bard annihilation processes between 1. 09 and 1. 43 GeV/c

Journal Article · · Phys. Rev., D; (United States)
In a study of p-bard annihilation reactions between 1.09 and 1.43 GeV/c, it is found that the four- and six-prong samples with a visible slow proton exhibit features substantially different from those expected based on a simple impulse approximation. A phenomenological model, developed in the framework of Glauber's model, provides an excellent description of the data. In as much as 26.6% of the three- and four-prong and 21.7% of the five- and six-prong samples, pions from one of the annihilation reactions interact with the spectator nucleon via either elastic or charge-exchange scattering. This process is called the final-state interaction. For the initial-state interaction in which the incident antiproton undergoes elastic scattering prior to annihilation, the process accounts for 7.5% (9.1%) of the three- and four- (five- and six-) prong events.
Research Organization:
Department of Physics, Michigan State University, East Lansing, Michigan 48824
OSTI ID:
6790118
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 23:7; ISSN PRVDA
Country of Publication:
United States
Language:
English

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