Baryonic resonances close to the Kbar-N threshold: the case of Sigma(1385)^+ in pp collisions
- Agakishiev, G.
- Balanda, A.
- Belver, D.
- Belyaev, A. V.
- Blanco, A.
- Boehmer, M.
- Boyard, J. L.
- Cabanelas, P.
- Castro, E.
- Chen, J. C.
- Chernenko, S.
- Christ, T.
- Destefanis, M.
- Dohrmann, F.
- Dybczak, A.
- Epple, E.
- Eberl, T.
- Fabbietti, L.
- Fateev, O. V.
- Finocchiaro, P.
- Fonte, P.
- Friese, J.
- Froehlich, I.
- Galatyuk, T.
- Garzon, J. A.
- Gernhaeuser, R.
- Gilardi, C.
- Golubeva, M.
- Gonzalez-Diaz, D.
- Guber, F.
- Gumberidze, M.
- Heinz, T.
- Hennino, T.
- Holzmann, R.
- Iori, I.
- Ivashkin, A.
- Jurkovic, M.
- Kaempfer, B.
- Kanaki, K.
- Karavicheva, T.
- Koenig, I.
- Koenig, W.
- Kolb, B. W.
- Kotte, R.
- Krasa, A.
- Krizek, F.
- Kruecken, R.
- Kuc, H.
- Kuehn, W.
- Kugler, A.
- Kurepin, A.
- Lalik, R.
- Lang, S.
- Lange, J. S.
- Lapidus, K.
- Liu, T.
- Lopes, L.
- Lorenz, M.
- Maier, L.
- Mangiarotti, A.
- Markert, J.
- Metag, V.
- Michalska, B.
- Michel, J.
- Moriniere, E.
- Mousa, J.
- Muentz, C.
- Naumann, L.
- Otwinowski, J.
- Pachmayer, Y. C.
- Palka, M.
- Parpottas, Y.
- Pechenov, V.
- Pechenova, O.
- Pietraszko, J.
- Przygoda, W.
- Ramstein, B.
- Reshetin, A.
- Rustamov, A.
- Sadovsky, A.
- Salabura, P.
- Schmah, A.
- Schwab, E.
- Siebenson, J.
- Sobolev, Yu. G.
- Spataro, S.
- Spruck, B.
- Stroebele, H.
- Stroth, J.
- Sturm, C.
- Tarantola, A.
- Teilab, K.
- Tlusty, P.
- Traxler, M.
- Trebacz, R.
- Tsertos, H.
- Wagner, V.
- Weber, M.
- Wendisch, C.
- Wuestenfeld, J.
- Yurevich, S.
- Zanevsky, Y. V.
DOIAbstract
12 pages; 12 figures; submitted to PRCInternational audienceWe present results of an exclusive measurement of the first excited state of the Sigma hyperon, Sigma(1385)^+, produced in p+p -> Sigma^+ + K^+ + n at 3.5 GeV beam energy. The extracted data allow to study in detail the invariant mass distribution of the Sigma(1385)^+. The mass distribution is well described by a relativistic Breit-Wigner function with a maximum at m_0 = 1383.2 +- 0.9 MeV/c^2 and a width of 40.2 +- 2.1 MeV/c^2. The exclusive production cross-section comes out to be 22.27 +- 0.89 +- 1.56 +3.07 -2.10 mu b. Angular distributions of the Sigma(1385)^+ in different reference frames are found to be compatible with the hypothesis that 33 % of Sigma(1385)^+ result from the ...
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