Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC
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1.45 MB
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Author(s)
The CMS Collaboration
Apyan, Aram
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Demiragli, Zeynep
Date Issued
February 2017
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
Khachatryan, V., A.M. Sirunyan, A. Tumasyan, W. Adam, E. Asilar, T. Bergauer, J. Brandstetter, et al. “Multiplicity and Rapidity Dependence of Strange Hadron Production in Pp, pPb, and PbPb Collisions at the LHC.” Physics Letters B 768 (May 2017): 103–129. doi:10.1016/j.physletb.2017.01.075.
Version
Final published version
Abstract
© 2017 The Author(s) Measurements of strange hadron (KS0, Λ+Λ‾, and Ξ−+Ξ‾+) transverse momentum spectra in pp, pPb, and PbPb 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 pp collisions at s=7TeV, pPb collisions at sNN=5.02TeV, and PbPb 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 PbPb 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. The spectra are compared to models motivated by hydrodynamics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2017.01.075
