Charged-particle angular correlations in XeXe collisions at √sNN = 5.44 TeV
Azimuthal correlations of charged particles in xenon-xenon collisions at a center-of-mass energy per nucleon pair of √sNN = 5.44 TeV are studied. The data were collected by the CMS experiment at the LHC with a total integrated luminosity of 3.42 μb−1 . The collective motion of the system formed i...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English English English |
| Published: |
American Physical Society
2019
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/79293/ http://irep.iium.edu.my/79293/ http://irep.iium.edu.my/79293/ http://irep.iium.edu.my/79293/1/79293_Charged-particle%20angular%20correlations_article.pdf http://irep.iium.edu.my/79293/2/79293_Charged-particle%20angular%20correlations_wos.pdf http://irep.iium.edu.my/79293/3/79293_Charged-particle%20angular%20correlations_scopus.pdf |
| Summary: | Azimuthal correlations of charged particles in xenon-xenon collisions at a center-of-mass energy per nucleon
pair of √sNN = 5.44 TeV are studied. The data were collected by the CMS experiment at the LHC with a total
integrated luminosity of 3.42 μb−1
. The collective motion of the system formed in the collision is parametrized
by a Fourier expansion of the azimuthal particle density distribution. The azimuthal anisotropy coefficients v2, v3,
and v4 are obtained by the scalar-product, two-particle correlation, and multiparticle correlation methods. Within
a hydrodynamic picture, these methods have different sensitivities to noncollective and fluctuation effects. The
dependence of the Fourier coefficients on the size of the colliding system is explored by comparing the xenonxenon results with equivalent lead-lead data. Model calculations that include initial-state fluctuation effects are
also compared to the experimental results. The observed angular correlations provide new constraints on the
hydrodynamic description of heavy ion collisions. |
|---|