A Search for Axial Vector in pbar pK+- K0{miss} pi+- pi+ pi- Annihilations at Rest in Gaseous Hydrogenat NTP
Articolo
Data di Pubblicazione:
1997
Abstract:
The study of the (K+/-Kmiss0) pi(-/+)pi(+)pi(-) channel (7016 events), from <(p)over bar p> annihilations in a gaseous hydrogen target at NTP, with the OBELIX spectrometer at LEAR (CERN), is presented. A spin-parity analysis provides evidence for two axial vectors, one in the low mass region, the well established f(1)(1285), decaying to alpha(u)(980) pi, the second, the 1(++) component of the old puzzling E/t, the f(1)(1420), decaying mainly to K*(K) over bar, seen for the first time in <(p)over bar p> annihilation at rest. The analysis confirms the dominant production of the pseudoscalar eta(1405), decaying mainly to (K pi)(s) (K) over bar, and the existence of a second pseudoscalar in the same mass region, the eta(1460), decaying mainly to K*(K) over bar.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
PARTIAL-WAVE ANALYSIS; RESONANCE PHYSICS; DECAYS; PI; SYSTEM; STATE; GEV/C; ETA; QCD; GLUEBALL
Elenco autori:
Bertin, A; Bruschi, M; Capponi, M; Collamati, A; Decastro, S; Dona, R; Ferretti, A; Galli, D; Giacobbe, B; Marconi, U; Piccinini, M; Semprinicesari, N; Spighi, R; Vecchi, S; Vezzani, A; Vigotti, F; Villa, M; Vitale, A; Zoccoli, A; Corradini, M; Donzella, A; Rizzini, El; Venturelli, L; Zenoni, A; Cicalo, C; Lai, A; Masoni, A; Musa, L; Puddu, G; Serci, S; Temnikov, Pp; Usai, G; Gorchakov, Oe; Prakhov, Sn; Rozhdestvensky, Am; Sapozhnikov, Mg; Tretyak, Vi; Poli, M; Gianotti, P; Guaraldo, C; Lanaro, A; Lucherini, V; Nichitiu, F; Petrascu, C; Rosca, A; Ableev, V; Cavion, C; Gastaldi, U; Lombardi, M; Maron, G; Vannucci, L; Vedovato, G; Bendiscioli, G; Filippini, V; Fontana, A; Montagna, P; Rotondi, A; Saino, A; Salvini, P; Scoglio, C; Balestra, Ferruccio; Botta, Elena; Bressani, Tullio; Bussa, Mp; Busso, Luigi; Calvo, D; Cerello, P; Costa, Sergio; Denisov, O; Fava, L; Feliciello, A; Ferrero, Livio; Filippi, A; Garfagnini, Raffaello; Grasso, A; Maggiora, A; Marcello, Simonetta; Panzieri, Daniele; Parena, D; Rossetto, E; Tosello, F; Valacca, L; Agnello, M; Iazzi, F; Minetti, B; Pauli, G; Tessaro, S; Santi, L.
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