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An upper limit on hypertriton production in collisions of Ar(1.76 AGeV)+KCl

Authors :
HADES Collaboration
Agakishiev, G.
Belver, D.
Blanco, A.
Böhmer, M.
Boyard, J. L.
Cabanelas, P.
Castro, E.
Chernenko, S.
Destefanis, M.
Dohrmann, F.
Dybczak, A.
Epple, E.
Fabbietti, L.
Fateev, O.
Finocchiaro, P.
Fonte, P.
Friese, J.
Fröhlich, I.
Galatyuk, T.
Garzón, J. A.
Gernhäuser, R.
Gilardi, C.
Golubeva, M.
González-Díaz, D.
Guber, F.
Gumberidze, M.
Heinz, T.
Hennino, T.
Holzmann, R.
Iori, I.
Ivashkin, A.
Jurkovic, M.
Kämpfer, B.
Karavicheva, T.
Koenig, I.
Koenig, W.
Kolb, B. W.
Kotte, R.
Krása, A.
Krizek, F.
Krücken, R.
Kuc, H.
Kühn, W.
Kugler, A.
Kurepin, A.
Lang, S.
Lange, J. S.
Lapidus, K.
Liu, T.
Lopes, L.
Lorenz, M.
Maier, L.
Mangiarotti, A.
Markert, J.
Metag, V.
Michalska, B.
Miche, J.
Morinière, E.
Mousa, J.
Müntz, C.
Naumann, L.
Pachmayer, Y. C.
Palka, M.
Pechenov, V.
Pechenova, O.
Pietraszko, J.
Przygoda, W.
Ramstein, B.
Rehnisch, L.
Reshetin, A.
Rustamov, A.
Sadovsky, A.
Salabura, P.
Scheib, T.
Schmah, A.
Schuldes, H.
Schwab, E.
Siebenson, J.
Sobolev, Yu. G.
Spatarof, S.
Spruck, B.
Ströbele, H.
Stroth, J.
Sturm, C.
Tarantola, A.
Teilab, K.
Tlusty, P.
Traxler, M.
Trebacz, R.
Tsertos, H.
Wagner, V.
Weber, M.
Wendisch, C.
Wisniowski, M.
Wüstenfeld, J.
Yurevich, S.
Zanevsky, Y.
Publication Year :
2013

Abstract

A high-statistic data sample of Ar(1.76 AGeV)+KCl events recorded with HADES is used to search for a hypertriton signal. An upper production limit per centrality-triggered event of $1.04$ x $10^{-3}$ on the $3\sigma$ level is derived. Comparing this value with the number of successfully reconstructed $\Lambda$ hyperons allows to determine an upper limit on the ratio $N_{_{\Lambda}^3H}/N_{\Lambda}$, which is confronted with statistical and coalescence-type model calculations.

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.1310.6198
Document Type :
Working Paper