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Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC

Abstract: Measurements of strange hadron (KS 0, ?+??, and ??+??+) 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.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Physics Letters B 768 (2017) 103-129

Editorial: Elsevier

 Fecha de publicación: 01/05/2017

Nº de páginas: 27

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.physletb.2017.01.075

ISSN: 0370-2693,1873-2445

Url de la publicación: https://doi.org/10.1016/j.physletb.2017.01.075