Role of Delta exchange for proton-antiproton annihilation into two-pion and three-pion channels

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dc.creatorBetz, M.
dc.creatorVeit, E. A.
dc.creatorHaidenbauer, J.
dc.date2002-03-25
dc.date.accessioned2026-07-07T05:39:05Z
dc.date.available2026-07-07T05:39:05Z
dc.descriptionProton-antiproton annihilation into two pions and three pions is studied in a baryon-exchange model. Annihilation diagrams involving nucleon as well as Delta-resonance exchanges are included consistently in the two- and three-pion channels. Effects from the initial-state interaction are fully taken into account. A comparison of the influence of the Delta exchange on the considered annihilation channels is made and reveals that its importance for three-pion annihilation is strongly reduced as compared to two-pion annihilation. It is found that annihilation into three uncorrelated pions can yield up to 10 % of the total experimentally observed three-pion annihilation cross section.
dc.description27 pages, 9 figures, accepted for publication in Eur. Phys. J. A
dc.identifierhttps://arxiv.org/abs/nucl-th/0203068
dc.identifierhttp://arxiv.org/abs/nucl-th/0203068
dc.identifierEur.Phys.J. A14 (2002) 113-124
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/81837
dc.subjectNuclear Theory
dc.titleRole of Delta exchange for proton-antiproton annihilation into two-pion and three-pion channels
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