Production of hypernuclei in Pb-Pb collisions at = 2.76 TeV with ALICE at the LHC

14th International Conference on Strangeness in Quark Matter

Lea, Ramona^1

Physics Department, University and INFN of Trieste, Via A. Valerio 2, 34127 Trieste, Italy^1

关键词: Hypernuclei;    Invariant mass distribution;    Pb-Pb collisions;    Production yield;    Secondary vertices;    Time interval;    Transverse momenta;    Upper limits;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/509/1/012108/pdf
DOI  :  10.1088/1742-6596/509/1/012108

来源: IOP

【 摘 要 】

Results on (anti-)hypertriton production in Pb⊥Pb collisions atSNN = 2.76 TeV, obtained by ALICE at the LHC, are reported. The (anti-)3H signal is extracted exploiting its mesonic decay (3H → 3He +π) , via the topological identication of secondary vertices and the analysis of the invariant mass distributions of (3He, π) pairs. The (3He,π) invariant mass distributions in different transverse momentum and in proper time intervals are shown. Search for state (H-Dibaryon) via its decay H-Dibaryon →pπ is discussed. As no HDibaryon signal is observed, an upper limit on its production yield has been determined.