New data on OZI rule violation in $\overline{P}P$ annihilation at rest

The results of a measurement of the ratio R =3D Y(phi pi+ pi-) / Y(omega = pi+ pi-) for antiproton annihilation at rest in a gaseous and in a liquid hydrogen target are presented. It was found that the value of this ratio increases with the decreasing of the dipion mass, which demonstrates the diffe...

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Detalles Bibliográficos
Autores principales: Bertin, A., Bruschi, M., De Castro, S., Feretti, A., Galli, D., Giacobbe, B., Marconi, U., Poli, M., Piccinini, M., Semprini-Cesari, N., Spighi, R., Vecchi, S., Vezzani, A., Vigotti, F., Villa, M., Vitale, A., Zoccoli, A., Belli, G., Corradini, M., Donzella, A., Lodi Rizzini, E., Venturelli, L., Zenoni, A., Cicalo, C., Masoni, A., Puddu, G., Serci, S., Temnikov, P.P., Usai, G., Denisov, O.Yu., Gorchakov, O.E., Nomokonov, V.P., Prakhov, S.N., Rozhdestvensky, A.M., Sapozhnikov, M.G., Tretyak, V.I., Gianotti, P., Guaraldo, C., Lanaro, A., Lucherini, V., Nichitiu, F., Petrascu, C., Rosca, A., Ableev, V.G., Cavion, C., Gastaldi, U., Lombardi, M., Andrighetto, A., Morando, M., Bendiscioli, G., Filippini, V., Fontana, A., Montagna, P., Rotondi, A., Saino, A., Salvini, P., Balestra, F., Botta, E., Bressani, T., Bussa, M.P., Busso, L., Calvo, D., Cerello, P., Costa, S., Fava, L., Feliciello, A., Ferrero, L., Filippi, A., Garfagnini, R., Grasso, A., D'Isep, D., Maggiora, A., Marcello, S., Panzieri, D., Parena, D., Rossetto, E., Tosello, F., Zosi, G., Agnello, M., Iazzi, F., Minetti, B., Margagliotti, G.V., Pauli, G., Tessaro, S., Santi, L.
Lenguaje:eng
Publicado: 1996
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(96)01198-7
http://cds.cern.ch/record/306909
Descripción
Sumario:The results of a measurement of the ratio R =3D Y(phi pi+ pi-) / Y(omega = pi+ pi-) for antiproton annihilation at rest in a gaseous and in a liquid hydrogen target are presented. It was found that the value of this ratio increases with the decreasing of the dipion mass, which demonstrates the difference in the phi and omega production mechanisms. An indication on the momentum transfer dependence of the apparent OZI rule violation for phi production from the 3S1 initial state was found.

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