Strangeness production associated to a high-pT particle in Pb-Pb collisions at = 2.76 TeV with ALICE

9th International Workshop on High-pT Physics at LHC

Castro, Xitzel Sánchez^1

IPHC, Université de Strasbourg, CNRS-IN2P3, 23 rue du loess, BP28, Strasbourg Cedex 2

67037, France^1

关键词: Angular correlations;    Hadron correlations;    Heavy ion collision;    Particle composition;    Particle production;    Strangeness production;    Trigger particles;    Ultrarelativistic heavy ion collision;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/589/1/012018/pdf
DOI  :  10.1088/1742-6596/589/1/012018

来源: IOP

【 摘 要 】

Particle production in heavy-ion collisions at RHIC and the LHC reveals an enhancement of the baryon-to-meson ratios with respect to pp collisions. The observed suppression of high-pTparticles raises the question of how the jet fragments may (re)distribute in ultra-relativistic heavy-ion collisions. With two-hadron correlations, we can study the particle composition in jets in order to get a better understanding of the aforementioned observables and the particle production mechanisms in the dense medium. In these proceedings, we present the status of the current analysis using two-hadron angular correlations for Pb-Pb collisions at 2.76 TeV using the ALICE detector. We study the two different possibilities, considering the strange particle as either the trigger particle or the associated particle. Results on K0s-h±, (Λ A)-h±and h±-K0Scorrelations are shown for central collisions.