Production of Σ(1385)± and Ξ(1530)0 in p_Pb collisions at measured by ALICE at the LHC

Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions 2016

Song, Jihye^1

Department of Physics, Pusan National University, Pusan, Korea, Republic of^1

关键词: Charged particle multiplicities;    Hadronic matters;    Heavy ion collision;    Hyperon resonance;    Model prediction;    Particle production;    Transverse momenta;    Transverse momentum distributions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/832/1/012060/pdf
DOI  :  10.1088/1742-6596/832/1/012060

来源: IOP

【 摘 要 】

In order to study the hot hadronic matter created in heavy-ion collisions, it is important to compare particle production in large systems to that in smaller systems, such as proton-proton (pp) and proton-lead (p-Pb) collisions. In particular, resonances with different lifetimes are good candidates to probe the interplay of particle re-scattering and regeneration in the hadronic phase. The yields of the strange and double-strange hyperon resonances Σ(1385)±and Ξ(1530)0are measured in the rapidity range -0.5 CMS0and (1020). The multiplicity dependence of the integrated yield ratios of excited hyperons to longer-lived particles is discussed and compared to model predictions from pQCD-inspired models such as PYTHIA8 as well as statistical hadronization models.