An I = 1 enhancement at a mass of 1550 MeV in the (Λπ) and (Σπ)-systems
- Dionisi, C
- Armenteros, R
- Diaz, J
- Gavillet, P
- Gay, JB
- Gurtu, A
- Hemingway, RJ
- Mazzucato, M
- Trepagnier, P
- Blokzijl, R
- Massaro, GGG
- Jongejans, B
- Engelen, J
- Timmermans, JJ
- Van De Walle, RT
- Foster, B
- Lamb, PR
- McDowell, WL
Publication date
September 1978
DOI Publisher
Elsevier BV Journal
Physics Letters BAbstract
Evidence is presented for an I = 1 enhancement observed in the reactions K-p→Λ(Σ)K01K ±π∓ at 4.2 GeV c inciden momentum. The mass and width of the proposed new Y* are, respectively, (1553 ± 7) MeV) and (80 ± 30) MeV. A decay branching ratio Σπ (Σπ + Λπ) = (35 ± 12)% is also obtained. © 1978
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