| Autor: |
Irakli Minashvili, N.A. Russakovich, C. J. Dodenhoff, A. Solovjev, J. P. Davies, V. Lenti, G. Vassiliadis, D. Barberis, W. Beusch, V. Romanovsky, G. Tchlatchidze, R. A. Fini, R. Sené, A. Kirk, A. Semenov, Federico Antinori, D. Evans, Y. Kulchitsky, A. Jacholkowski, D. Di Bari, B. Ghidini, E. Quercigh, S. Clewer, I. Vichou, F. Navach, Maria Girone, B. R. French, J. N. Carney, R. A. Loconsole, M. Sené, S. Maljukov, M.F. Votruba, R. P. Barnes, A. C. Bayes, Vito Manzari, S. Abatzis, O. Villalobos Bailie, K.L. Norman, J.B. Kinson |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
Physics Letters B. 324:509-514 |
| ISSN: |
0370-2693 |
| Popis: |
The reaction pp → pƒ(π + π − π + π − )p s has been studied at 450 GeV/c in an experiment designed to search for gluonic states. In addition to the well known ƒ 1 (1285) , the π+π−π+π− mass spectrum shows evidence for two states pre only observed by the WA76 experiment, the X(1450) and X(1900). An analysis of the X(1450) shows that it is a relatively narrow state (Γ = 56 ± 12 MeV) with I(JPC) = 0(0++) which decays to ϱ0π+π−. The X (1900) could either b single broad state (Γ = 370±70 MeV) with I(JPC) = 0(2++) or possibly separate states. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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