Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7247
Title: Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV/c in PbPb collisions at ?sNN=5.02 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Flow harmonics
Ionic collisions
Parton energy loss
Jet quenching
Issue Date: Jan-2018
Publisher: Elsevier Ltd.
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV/c in PbPb collisions at √sNN=5.02 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 776, 195-216. doi:10.1016/j.physletb.2017.11.041
Abstract: The Fourier coefficients v2 and v3 characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at sNN=5.02 TeV are measured with data collected by the CMS experiment. The measurements cover a broad transverse momentum range, 1<pT<100 GeV/c. The analysis focuses on the pT>10 GeV/c range, where anisotropic azimuthal distributions should reflect the path-length dependence of parton energy loss in the created medium. Results are presented in several bins of PbPb collision centrality, spanning the 60% most central events. The v2 coefficient is measured with the scalar product and the multiparticle cumulant methods, which have different sensitivities to initial-state fluctuations. The values from both methods remain positive up to pT∼60–80 GeV/c, in all examined centrality classes. The v3 coefficient, only measured with the scalar product method, tends to zero for pT≳20 GeV/c. Comparisons between theoretical calculations and data provide new constraints on the path-length dependence of parton energy loss in heavy ion collisions and highlight the importance of the initial-state fluctuations.
URI: https://doi.org/10.1016/j.physletb.2017.11.041
https://hdl.handle.net/11147/7247
ISSN: 0370-2693
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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