Backward production of a spin parity 1+ϱπ enhancement at 1.04 GeV
1977; Elsevier BV; Volume: 69; Issue: 1 Linguagem: Inglês
10.1016/0370-2693(77)90148-4
ISSN1873-2445
AutoresPh. Gavillet, P. Bergé, J. Ferrando, R.J. Hemingway, S.O. Holmgren, M. J. Losty, J. Marín, L. Montanet, E. Pagiola, N. Yamdagni, R. Blokzijl, B. Jongejans, J.C. Kluyver, G.G.G. Massaro, J. Engeler, W. Kittel, Joris S. M. Vergeest, Rik Van de Walle, B. Foster, Pinhas Grossman, P.R. Lamb, W.L. McDowell,
Tópico(s)Nuclear physics research studies
ResumoA spin-parity 1+ϱπ enhancement is observed for the 3π mass spectrum in the reaction K−p → Σ−π+π+π− where events with a small (K− → Σ−) momentum transfer are selected. The mass (1040 MeV) and width (230 MeV) of this enhancement are reminiscent of the A1 → ϱπ bump which has mainly been observed in the diffractive-like processes. The cross section for this enhancement at 4.15 GeV/c incident K− momentum is (3.6 ± 0.5) μb.
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