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 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 collis...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-05-01
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| Series: | Physics Letters B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317301168 |
| _version_ | 1811213970521980928 |
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| author | V. Khachatryan A.M. Sirunyan A. Tumasyan |
| author_facet | V. Khachatryan A.M. Sirunyan A. Tumasyan |
| author_sort | V. Khachatryan |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-12T05:55:16Z |
| format | Article |
| id | doaj.art-a99ab864a99d4732a911eb4c43d48486 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-04-12T05:55:16Z |
| publishDate | 2017-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-a99ab864a99d4732a911eb4c43d484862022-12-22T03:45:10ZengElsevierPhysics Letters B0370-26931873-24452017-05-01768C10312910.1016/j.physletb.2017.01.075Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHCV. KhachatryanA.M. SirunyanA. TumasyanMeasurements 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.http://www.sciencedirect.com/science/article/pii/S0370269317301168CMSPhysicsHeavy ionSpectraRadial flow |
| spellingShingle | V. Khachatryan A.M. Sirunyan A. Tumasyan Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC Physics Letters B CMS Physics Heavy ion Spectra Radial flow |
| title | Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC |
| title_full | Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC |
| title_fullStr | Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC |
| title_full_unstemmed | Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC |
| title_short | Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC |
| title_sort | multiplicity and rapidity dependence of strange hadron production in pp ppb and pbpb collisions at the lhc |
| topic | CMS Physics Heavy ion Spectra Radial flow |
| url | http://www.sciencedirect.com/science/article/pii/S0370269317301168 |
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