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

作者：Agakishiev G^*; Belver D; Blanco A; Boehmer 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; 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; Karavicheva T; Koenig I; Koenig W

来源：European Physical Journal A, 2013, 49(11): 146.

DOI：10.1140/epja/i2013-13146-0

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 1.04x10(-3) on the 3 sigma level is derived. Comparing this value with the number of successfully reconstructed. hyperons allows to determine an upper limit on the ratio N-A3H/N-A, which is confronted with statistical and coalescence-type model calculations.

• 出版日期2013-11-20