(Anti-)matter and hyper-matter production at the LHC with ALICE

International Workshop on Discovery Physics at the LHC 2012

Martin, Nicole^1,2

ExtreMe Matter Institute EMMI, Research Division, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany^1

Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany^2

关键词: A-center;    Bound state;    High-energy nucleus-nucleus collisions;    Hypernuclei;    Light nuclei;    Matter production;    Particle identifications;    Thermal model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/455/1/012007/pdf
DOI  :  10.1088/1742-6596/455/1/012007

来源: IOP

【 摘 要 】

ALICE is the experiment at the CERN LHC dedicated to the investigation of high energy nucleus-nucleus collisions. Its excellent particle identification capabilities allow for the measurement of rarely produced particles, like hypernuclei and light nuclei (and their anti-particles). We present here results from Pb{Pb collisions at a center of mass energy of √sNN = 2:76 TeV per nucleon{nucleon pair. In particular the measurement of3He and4He is discussed. In addition the reconstruction of (anti-)hypertritons via their mesonic decay (3H→3 He+ρ) is presented. Searches for even lighter hypermatter states, i.e. AA (also known as H-Dibaryon) and An bound states, are dicussed. The results are compared with thermal model predictions.