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N \bar N Annihilation creates two mesons
Authors:J Vandermeulen
Institution:1. Institute of Physics, University of Liège, B-4000, Liège, Belgium
Abstract:N \(\bar N\) annihilation is assumed to occur exclusively via two-meson production, with nearest threshold dominance. A phenomenological expression for the branching ratios, implementing the rule, contains two parameters. The set ofs- andp-wave (q \(\bar q\) ) mesons is used. Reasonable results are obtained for rates measured inp \(\bar p\) annihilation at rest. The numerous channels are projected into the multipion and kaon final states for comparison with in-flight experiments. A good overall agreement is reached up top lab~3 GeV/c; beyond, more mesons should be included to provide new thresholds.
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