Production of strange particles in antineutrino interactions at the CERN PS

The authors have studied neutral strange particle production in the bubble chamber Gargamelle filled with propane and exposed to antineutrinos from the CERN PS. Cross sections are presented for Lambda , Sigma /sup 0/ and K/sup 0/ production. Associated production reactions ( Delta S=0) have been obs...

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Detalles Bibliográficos
Autores principales: Erriquez, O, Allasia, D, Bisi, V, Bonetti, S, Bonneaud, G, Bullock, F W, Cavalli, D, Escoubés, B, Fogli-Muciaccia, M T, Franzinetti, Carlo, Gamba, D, Guyonnet, J L, Halsteinslid, A, Huss, D, Jarlskog, C, Jones, T W, Marzari-Chiesa, A, Michette, A G, Myklebost, K, Natali, S, Nuzzo, S, Paty, M, Pullia, A, Racca, C, Riccati, L, Riester, J L, Rognebakke, A, Rollier, M, Romero, A, Sacco, R, Schäffer, M, Skjeggestad, O, Tvedt, B
Lenguaje:eng
Publicado: 1978
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(78)90316-4
http://cds.cern.ch/record/879142
Descripción
Sumario:The authors have studied neutral strange particle production in the bubble chamber Gargamelle filled with propane and exposed to antineutrinos from the CERN PS. Cross sections are presented for Lambda , Sigma /sup 0/ and K/sup 0/ production. Associated production reactions ( Delta S=0) have been observed in the charged and the neutral current channels. From 45 candidates for the quasi-elastic reaction nu p to mu /sup +/ Lambda , on bound and free protons, estimates of the axial transition form factor M/sub A/ have been made using the total cross section and the t distribution. The weighted average from the two methods is M/sub A/=862+or-190 MeV. From a subsample of 15 candidates for nu interactions on free protons in propane, with (28+or-6)% background from nu interactions on bound protons, M/sub A/=883+or-243 MeV is obtained. The polarization of the Lambda hyperons has been studied for the quasi-elastic reaction. (11 refs).

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