Long-range two-particle correlations with K0S and Lambda in pPb and PbPb collisions
Collaboration
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Abstract:
Measurements of two-particle angular correlations between identified strange hadrons ( and /)
and unidentified charged particles, emitted in pPb collisions, are presented over a wide range in pseudorapidity and full azimuth. The data, corresponding to an integrated
luminosity of approximately 35nb, were collected during the 2013 LHC pPb run at a nucleon-nucleon center-of-mass energy of 5.02TeV by the CMS experiment. The results are compared to 2.76TeV semi-peripheral PbPb collision data, collected during the 2011 PbPb run, covering a similar range of particle multiplicities. The and / are reconstructed via their topological secondary decays. The observed long-range correlations are characterized by the second-order () and third-order () anisotropy harmonics of and /, which are studied as a function of particle multiplicity and transverse momentum. For high-multiplicity pPb events, a particle-species dependence of and is observed. Divided by the number of constituent quarks, the and harmonics of and / as a function of kinetic energy per quark fall on the same curve within 10--15 for each multiplicity class. This scaling is better than that observed in peripheral PbPb collisions.Note:
- Preliminary results
- Data
- particle: multiplicity
- correlation: long-range
- angular correlation: two-particle
- quark: constituent
- transverse momentum dependence
- correlation function: (charged particle strange particle)
- CERN LHC Coll
- anisotropy
- rapidity dependence
References(51)
Figures(8)
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