Data di Pubblicazione:
1995
Abstract:
The results of the analysis of 3940 (KKsr)wr events from a sample of 18 millions p annihilations in the liquid
hydrogen target of the OBELIX spectrometer at LEAR (CERN) are presented. The presence of two pseudoscalar states at
1.416+-0.002 GeV/c2, with width 0.050f0.004GeV/c2, andat 1.46+-0.01 GeV/c2, with width 0.105+-0.015 GeV/c2, is established. The lighter mass resonance decays mainly to Ki?n, possibly with final state interactions and a small contribution
coming from mr. The higher mass O-+ state, which is seen for the first time in pp annihilation at rest, decays only to
K*J?. Masses, widths and decay modes are in agreement with the analysis of J/psi radiative decay performed by the Mark
III Collaboration. From the fit the G-parity was determined to be +1. The dominant three-body decay mode of the lighter
pseudoscalar is observed for the first time in this measurement.
hydrogen target of the OBELIX spectrometer at LEAR (CERN) are presented. The presence of two pseudoscalar states at
1.416+-0.002 GeV/c2, with width 0.050f0.004GeV/c2, andat 1.46+-0.01 GeV/c2, with width 0.105+-0.015 GeV/c2, is established. The lighter mass resonance decays mainly to Ki?n, possibly with final state interactions and a small contribution
coming from mr. The higher mass O-+ state, which is seen for the first time in pp annihilation at rest, decays only to
K*J?. Masses, widths and decay modes are in agreement with the analysis of J/psi radiative decay performed by the Mark
III Collaboration. From the fit the G-parity was determined to be +1. The dominant three-body decay mode of the lighter
pseudoscalar is observed for the first time in this measurement.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
A., Bertina; M., Bruschia; B., Ceredaa; S., De Castroa; A., Ferrettia; D., Gallia; B., Giacobbe”; U., Marconi a; M., Poli ap*; M., Piccininia; N., Semprini Cesaria; R., Spighi a; S., Vecchi a; A., Vezzania; F., Vigottia; M., Villaa; A., Vitale a; A., Zoccoli a; M., Corradinib; A., Donzellab; E., Lodi Rizzini b; L., Venturelli b; A., Zenoni ‘; C., Cicalo d; A., Laid; A., Masoni d; L., Musad; G., Puddu d; S., Serci d; P. P., Temnikovd; G., Usai d; V. G., Ableeve; Denisov e, O. Y. u.; A. M., Rozhdestvensky e; M. G., Sapozhnikove; V. I., Tretyake; P., Gianottif; C., Guaraldof; A., Lanaro f; V., Lucherini f; F., Nichitiu f; L, ; C., Petrascu f**; A., Rosca’V’; C., Cavions; U., Gastaldi g; G., Marona; M., Morando h; G., Bendiscioli; V., Filippini; Fontana, Andrea; Montagna, PAOLO MARIA; Rotondi, Alberto; A., Saino; P., Salvini; F., Balestraj; E., Bottaj; T., Bressanij; M. P., Bussa j; L., Bussoj; D., Calvjo; Cerelloj, P.; S., Costal; A., Felicielloj; L., Ferreroj; A., Filippij; R., Garfagnini’ J; A., Grassoj; A., Maggiora j; S., Marcelloj; N., Mirfakhraij; 2, ; D., Panzierij; D., Parenaj; E., Rossettoj; F., Toselloj; G., Zosij; M., Agnellok; F., Iazzi k; B., Minettik; G., Paulit; S., Tessaroe; L., Santi
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