Collectivity of (non-)strange hadrons in high-multiplicity pp with CMS

16th International Conference on Strangeness in Quark Matter

Stephans, George S. F.^1

Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge

MA, United States^1

关键词: CMS detectors;    Collective phenomena;    Collision energies;    Collision systems;    Hadron production;    High multiplicity;    Long range correlations;    Two particle correlation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/779/1/012058/pdf
DOI  :  10.1088/1742-6596/779/1/012058

来源: IOP

【 摘 要 】

Observation of an enhanced long-range, near-side, two-particle correlation (known as the "Ridge") in high-multiplicity pp and pPb collisions opened up new opportunities of exploring QCD dynamics in small collision systems. The CMS detector at the LHC has excellent capabilities of reconstructing weakly decaying strange hadrons such as KS0λ, and ξ. Studies of strange hadron production and correlations in small colliding systems provide additional insights into the physical origin of the observed collective phenomena. New results for pT spectra and long-range two-particle correlations for charged particles and identified strange hadrons in high- multiplicity pp and pPb collisions are presented. The data at various collision energies for pp and pPb collisions are compared to those obtained for PbPb at similar multiplicities. Multiparticle cumulants for pp and pPb events are studied in order to more fully explore the collective nature of the long-range correlations.