Archivio Istituzionale della RicercaThe partial wave analysis of the reaction at rest has been performed for the first time by using high-statistics data sets collected in hydrogen targets at three different densities. The different mixtures of partial waves corresponding to our samples allow a reliable determination of each contribution. This technique is crucial in the identification of the exotic candidate f2(1565) which can be produced by 1S0, 3P1 and 3P2 initial states. The amplitude analysis was performed in the frame of the K-Matrix and P-Vector approach. It requires presence of the exotic candidates f0(1500) and f2(1565) with the following masses and total widths: (1449 ± 20)MeV, (114 ± 30)MeV and (1507 ± 15)MeV, (130 ± 20)MeV respectively. In addition to f0(980), f0(1300) f2(1270) and ϱ(770), a clear evidence of I = 1, JP = 1− signal, which we identify with ϱ(1450), is obtained.
Spin-parity analysis of the final state π+.π−.π0 from anti-p.p annihilation at rest in hydrogen targets at three densities / A., Bertin; M., Bruschi; M., Capponi; A., Collamati; C., Damiani; S., De Castro; R., Donà; A., Ferretti; L., Filippi; D., Galli; B., Giacobbe; U., Marconi; I., Massa; M., Piccinini; M., Poli; N., Semprini Cesari; R., Spighi; V., Vagnoni; S., Vecchi; A., Vezzani; F., Vigotti; M., Villa; A., Vitale; A., Zoccoli; M., Corradini; A., Donzella; E., Lodi Rizzini; L., Venturelli; A., Zenoni; C., Cicaló; A., Masoni; G., Puddu; S., Serci; P. P., Temnikov; G., Usai; O. E., Gorchakov; S. N., Prakhov; A. M., Rozhdestvensky; M. G., Sapozhnikov; V. I., Tretyak; P., Gianotti; C., Guaraldo; A., Lanaro; V., Lucherini; F., Nichitiu; C., Petrascu; A., Rosca; V. G., Ableev; C., Cavion; U., Gastaldi; G., Maron; R. A., Ricci; 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; Agnello, Michelangelo; Iazzi, Felice; Minetti, Bruno; G., Pauli; S., Tessaro; L., Santi. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 408:1-4(1997), pp. 476-486. [10.1016/S0370-2693(97)00791-0]
Spin-parity analysis of the final state π+.π−.π0 from anti-p.p annihilation at rest in hydrogen targets at three densities
AGNELLO, MICHELANGELO;IAZZI, Felice;MINETTI, Bruno;
1997
Abstract
The partial wave analysis of the reaction at rest has been performed for the first time by using high-statistics data sets collected in hydrogen targets at three different densities. The different mixtures of partial waves corresponding to our samples allow a reliable determination of each contribution. This technique is crucial in the identification of the exotic candidate f2(1565) which can be produced by 1S0, 3P1 and 3P2 initial states. The amplitude analysis was performed in the frame of the K-Matrix and P-Vector approach. It requires presence of the exotic candidates f0(1500) and f2(1565) with the following masses and total widths: (1449 ± 20)MeV, (114 ± 30)MeV and (1507 ± 15)MeV, (130 ± 20)MeV respectively. In addition to f0(980), f0(1300) f2(1270) and ϱ(770), a clear evidence of I = 1, JP = 1− signal, which we identify with ϱ(1450), is obtained.
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https://hdl.handle.net/11583/1845719
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