Backward production of a spin-parity 1+ Kϱ resonance at 1.28 GeV
1978; Elsevier BV; Volume: 76; Issue: 4 Linguagem: Inglês
10.1016/0370-2693(78)90919-x
ISSN1873-2445
AutoresPh. Gavillet, J. Dı́az, C. Dionisi, A. Gurtu, R.J. Hemingway, M. J. Losty, J. Marín, M. Mazzucato, L. Montanet, E. Pagiola, R. Blokzijl, B. Jongejans, G.G.G. Massaro, H. Voorthuis, J. Engelen, W. Kittel, Joris S. M. Vergeest, R.T. Van de Walle, B. Foster, P. Grossmann, W.L. McDowell,
Tópico(s)Nuclear physics research studies
ResumoA (Kππ)+ mass enhancement is observed in the reactions K−p → Ξ −Ko+π+πo− when events with a small (K− → Ξ−) four momentum transfer squared are selected. The signal is also visible in the reaction K−p → Ξ−π++ neutrals. The enhancement, centered at 1.28 GeV, is seen to decay preferentially into Kϱ with spin-parity JP = 1+. The cross section for K−p→ Ξ−C+(1.28) with C+ → Kϱ at 4.15 GeV/c incident K− momentum is (6.2 ± 0.6) μb.
Referência(s)