Experimental study of p.bar.n annihilations between 1.0 and 1.6 GeV/c

pn annihilations into three and five charged mesons with or without neutrals have been studied, in order to measure the contributions of the various final states to the 5.5 mb enhancement discovered in the total I=1 NN cross section at 2190 MeV total CM energy. Fits have been performed to the cross...

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Detalles Bibliográficos
Autores principales: Alston-Garnjost, M, Bertanza, L, Bettini, A, Bigi, A, Borreani, G, Casali, R, Cresti, M, Huesman, R H, Lariccia, P, Mazzucato, M, Pazzi, R, Peruzzo, L, Quassiati, B, Rinaudo, G, Ross, R, Sartori, G, Sartori, S, Solmitz, F T, Vigone, M, Zumerle, G
Lenguaje:eng
Publicado: CERN 1974
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.5170/CERN-1974-018.102
http://cds.cern.ch/record/867136
Descripción
Sumario:pn annihilations into three and five charged mesons with or without neutrals have been studied, in order to measure the contributions of the various final states to the 5.5 mb enhancement discovered in the total I=1 NN cross section at 2190 MeV total CM energy. Fits have been performed to the cross sections as functions of the incident p momentum with background plus a resonant term. The fits show enhancement in several final states, the statistically most significant one being in the reaction pn to pi /sup +/ pi /sup -/ pi /sup -/ (0.51+or-0.13 mb over a background of 1.4 mb). Less significant effects are also found in all other pionic annihilation final states regardless of their G-parity. (2 refs).

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