1. A Search for Axial Vectors in p ̅p→K^± K_miss^0 π^± π^+ π^- Annihilations at Rest in Gaseous Hydrogen at NTP
- Author
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A. Bertin, M. Bruschi, M. Capponi, A. Collamati, S. De Castro, R. DonÃ, A. Ferretti, D. Galli, B. Giacobbe, U. Marconi, M. Piccinini, N. Semprini-Cesari, R. Spighi, S. Vecchi, A Vezzani, F. Vigotti, M. Villa, A. Vitale, A. Zoccoli, M. Corradini, A. Donzella, E. Lodi Rizzini, L. Venturelli, A. Zenoni, C.Cicalò, A. Lai, A. Masoni, L. Musa, G. Puddu, S. Serci, P.P. Temnikov, G. Usai, O.E. Gorchakov, S.N. Prakhov, A.M. Rozhdestvensky, M.G. Sapozhnikov, V.I. Tretyak, M. Poli, P. Gianotti, C. Guaraldo, A. Lanaro, V. Lucherini, F. Nichitiu, C. Petrascu, A. Rosca, V. Ableev, C. Cavion, U. Gastaldi, M. Lombardi, G. Maron, L. Vannucci, G. Vedovato, G. Bendiscioli, V. Filippini, A. Fontana, P. Montagna, A. Rotondi, A. Saino, P. Salvini, C. Scoglio, F. Balestra, E. Botta, T. Bressani, M.P. Bussa, L. Busso, D. Calvo, P. Cerello, S. Costa, O. Denisov, L. Fava, A. Feliciello, L. Ferrero, A. Filippi, R. Garfagnini, A. Grasso, A. Maggiora, S. Marcello, D. Panzieri, D. Parena, E. Rossetto, F. Tosello, L. Valacca, M. Agnello, F. Iazzi, B. Minetti, G. Pauli, S. Tessaro, and L. Santi
- Abstract
The study of the K^± K_miss^0 π^± π^+ π^- Channel (7016 events), from p ̅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 low KK ̅π mass region, the well established f_1(1285), decaying to a_0(980)π, the second, the 1^++ component of the old puzzling E/i, the f_1(1420), decaying mainly to K^*K ̅, seen for the first time in p ̅p annihilation at rest. The analysis confirms the dominant production of the pseudoscalar η(1405), decaying mainly to (Kπ)_sK ̅, and the existence of a second pseudoscalar in the same mass region, the η(1460), decaying mainly to K*K ̅.
- Published
- 1997
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