A1 Journal article (refereed)
Jet-hadron correlations measured relative to the second order event plane in Pb-Pb collisions at √sNN = 2.76 TeV (2020)

ALICE Collaboration. (2020). Jet-hadron correlations measured relative to the second order event plane in Pb-Pb collisions at √sNN = 2.76 TeV. Physical Review C, 101(6), Article 064901 . https://doi.org/10.1103/PhysRevC.101.064901

JYU authors or editors

Publication details

All authors or editors: ALICE Collaboration

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2020

Volume: 101

Issue number: 6

Article number: 064901

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.101.064901

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/70412

Web address of parallel published publication (pre-print): https://arxiv.org/abs/1910.14398

Abstract

The quark gluon plasma produced in ultrarelativistic heavy-ion collisions at the Large Hadron Collider (LHC) can be studied by measuring the modifications of jets formed by hard scattered partons which interact with the medium. We studied these modifications via angular correlations of jets with charged hadrons for jets with momenta 20 < P-T(jet)< 40 GeV/c as a function of the associated particle momentum. The reaction plane fit method is used in this analysis to remove the flow modulated background. The analysis of angular correlations for different orientations of the jet relative to the second order event plane allows for the study of the path length dependence of medium modifications to jets. We present the dependence of azimuthal angular correlations of charged hadrons with respect to the angle of the axis of a reconstructed jet relative to the event plane in Pb-Pb collisions at root s(NN) = 2.76 TeV. The dependence of particle yields associated with jets on the angle of the jet with respect to the event plane is presented. Correlations at different angles relative to the event plane are compared through ratios and differences of the yield. No dependence of the results on the angle of the jet with respect to the event plane is observed within uncertainties, which is consistent with no significant path length dependence of the medium modifications for this observable.

Keywords: particle physics; nuclear physics

Contributing organizations

Ministry reporting: Yes

VIRTA submission year: 2020

JUFO rating: 2