Backward production of a spin parity 1/sup +/ rho pi enhancement at 104 GeV

A spin-parity 1/sup +/ rho pi enhancement is observed for the 3 pi mass spectrum in the reaction K/sup -/p to Sigma /sup -/ pi /sup +/ pi /sup +/ pi /sup -/ where events with a small (K/sup -/ to Sigma /sup - /) momentum transfer are selected. The mass (1040 MeV) and width (230 MeV) of this enhancem...

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Detalles Bibliográficos
Autores principales: Gavillet, P, Bergé, P, Blokzijl, R, De van de Walle, R, Engeler, J, Ferrando, A, Foster, B, Grossman, P, Hemingway, R J, Holmgren, S O, Jongejans, B, Kittel, E W, Kluyver, J C, Lamb, P, Losty, Michael J, Marin, J C, Massaro, G G G, McDowell, W L, Montanet, Lucien, Pagiola, E, Vergeest, J, Yamdagni, N
Lenguaje:eng
Publicado: 1977
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(77)90148-4
http://cds.cern.ch/record/878579
Descripción
Sumario:A spin-parity 1/sup +/ rho pi enhancement is observed for the 3 pi mass spectrum in the reaction K/sup -/p to Sigma /sup -/ pi /sup +/ pi /sup +/ pi /sup -/ where events with a small (K/sup -/ to Sigma /sup - /) momentum transfer are selected. The mass (1040 MeV) and width (230 MeV) of this enhancement are reminiscent of the A/sub 1/ to rho pi bump which has mainly been observed in the diffractive-like processes. The cross section for this enhancement at 4.15 GeV/c incident K/sup -/ momentum is (3.6+or-0.5) mu b. (16 refs).

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