Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-HIN-15-006 | ||
| Multiplicity and rapidity dependence of strange hadron spectra in pp, pPb, and PbPb collisions at LHC energies | ||
| CMS Collaboration | ||
| October 2015 | ||
| Abstract: Measurements of strange hadron ($\mathrm{K}^{0}_{s}$, $\Lambda^{+}+\Lambda^{-}$ and $\Xi^{+}+\Xi^{-}$) transverse momentum ($p_{\mathrm{T}}$) spectra in pp, pPb and PbPb collisions are presented over a wide range in charge-particle multiplicity and particle rapidity. The data were taken with the CMS detector at the LHC for pp collisions at $\sqrt{s} =$ 7 TeV, pPb collisions at $\sqrt{s_{NN}} =$ 5.02 TeV and PbPb collisions at $\sqrt{s_{NN}} =$ 2.76 TeV. The average transverse kinetic energy ($KE^{}_{\mathrm{T}}$) is found to increase with event multiplicity, with a faster rate for heavier particle species. At similar multiplicities, the separation in the $KE^{}_{\mathrm{T}}$ between different particle species is observed to be larger for pp and pPb systems than PbPb system. In pPb collisions, the average $KE^{}_{\mathrm{T}}$ is found to be larger in the Pb-going direction than in the p-going direction. This trend of asymmetry becomes more evident for heavier particle species as event multiplicity increases. The data are compared to models motivated by hydrodynamics. | ||
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Links:
CDS record (PDF) ;
inSPIRE record ;
Public twiki page ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PLB 768 (2017) 103. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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