ISSN:
1434-601X
Keywords:
PACS. 13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons, etc.) – 14.20.-c Baryons (including antiparticles) – 21.30.Cb Nuclear forces in vacuum – 25.43.+t Antiproton-induced reactions
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: p annihilation into two pions and three pions is studied in a baryon exchange model. Annihilation diagrams involving nucleon as well as Δ-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 Δ 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epja/iepja1373
