Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC
Measurements of strange hadron (KS0, Λ+Λ¯, and Ξ–+Ξ¯+) transverse momentum spectra in pp, pPb, and Pb collisions are presented over a wide range of rapidity and event charged-particle multiplicity. The data were collected with the CMS detector at the CERN LHC in pppp collisions at √sNN =7TeV, pPb collisions at View the MathML sourcesNN=5.02TeV, and Pb collisions at √sNN = 2.76TeV. The average transverse kinetic energy is found to increase with multiplicity, at a faster rate for heavier strange particle species in all systems. At similar multiplicities, the difference in average transverse kinetic energy between different particle species is observed to be larger for pp and pPb events than for Pb events. In pPb collisions, the average transverse kinetic energy is found to be slightly larger in the Pb-going direction than in the p-going direction for events with large multiplicity. Lastly, the spectra are compared to models motivated by hydrodynamics.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CMS Collaboration
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1344431
- Alternate ID(s):
- OSTI ID: 1289928
- Report Number(s):
- FERMILAB-PUB-16-195-CMS; CMS-HIN-15-006; CERN-EP-2016-105; arXiv:1605.06699; S0370269317301168; PII: S0370269317301168
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 768 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
Web of Science
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