Study of the f0(1500)/f2(1525) production in the exclusive annihilation in anti-n p -> pi+pi+pi- in flight.
Articolo
Data di Pubblicazione:
1998
Abstract:
The spin-parity analysis of the nbar p --> pi+pi+pi-exclusive reaction in flight is presented. The main aim is to
study the (pi+pi-) invariant mass spectrum in the region around 1500 MeV. The analysis was performed with
a Breit-Wigner parametrization for all the resonant states and, for the scalar sector in the mass region below 1.2
GeV, by means of a K-matrix-like treatment. It clearly shows the need for two states, a scalar one (0++) with
mass and width (1522+-25) MeV and (108+-33) MeV, and a tensorial one (2++) with mass (1575
618) MeV and width (119+-24) MeV, respectively. In addition, the analysis requires the presence of a
scalar state at (1280+-55) MeV, (323+-13) MeV broad, and of a second vectorial one, in addition to the
rho0(770) signal, with mass and width (1348+-33) MeV and (275+-10) MeV, respectively.
study the (pi+pi-) invariant mass spectrum in the region around 1500 MeV. The analysis was performed with
a Breit-Wigner parametrization for all the resonant states and, for the scalar sector in the mass region below 1.2
GeV, by means of a K-matrix-like treatment. It clearly shows the need for two states, a scalar one (0++) with
mass and width (1522+-25) MeV and (108+-33) MeV, and a tensorial one (2++) with mass (1575
618) MeV and width (119+-24) MeV, respectively. In addition, the analysis requires the presence of a
scalar state at (1280+-55) MeV, (323+-13) MeV broad, and of a second vectorial one, in addition to the
rho0(770) signal, with mass and width (1348+-33) MeV and (275+-10) MeV, respectively.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Bertin, A.; Bruschi, M.; Capponi, M.; Collamati, A.; De, Castro; S., Donà ; R., Ferretti; A., Galli; D., Giacobbe; B., Marconi; U., Piccinini; M., Poli; Semprini, Cesari; N., Spighi; R., Vecchi; S., Vezzani; A., Vigotti; F., Villa; M., Vitale; A., Zoccoli; A., Corradini; M., Donzella; Lodi, Rizzini; E., Venturelli; L., Zenoni; A., Cicalò; C., Masoni; A., Puddu; G., Serci; S., Temnikov; P., Usai; G., Gortchakov; O. E., 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., Cavion; C., Gastaldi; U., Lombardi; M., Maron; G., Vannucci; L., Vedovato; Bendiscioli, G.; Filippini, V.; Fontana, Andrea; Montagna, PAOLO MARIA; Rotondi, Alberto; Saino, A.; Salvini, P.; Scoglio, C.; Balestra, F.; Bergo, D.; Botta, E.; Bressani, T.; Bussa, M. P.; Busso, L.; Calvo, D.; Cerello, P.; Costa, S.; Damiani, P.; Denisov, O. Y.; D'Isep, F.; Fanara, C.; Fava, L.; Feliciello, A.; Ferrero, L.; Filippi, A.; Garfagnini, R.; Grasso, A.; Maggiora, A.; Marcello, S.; Mirfakhrai, N.; Panzieri, D.; Rossetto, E.; Tosello, F.; Valacca, L.; Agnello, M.; Iazzi, F.; Minetti, B.; Pauli, G.; Tessaro, S.; Santi, L.
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