Transverse momentum spectra and nuclear modification factors of charged particles in Xe–Xe collisions at sNN=5.44TeV

S Acharya, Jonatan Adolfsson, Peter Christiansen, Martin Ljunggren, Adrian Nassirpour, Anders Oskarsson, Tuva Richert, David Silvermyr, Evert Stenlund, Vytautas Vislavicius, S. Zou, ALICE Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

Transverse momentum (pT) spectra of charged particles at mid-pseudorapidity in Xe–Xe collisions at sNN=5.44TeV measured with the ALICE apparatus at the Large Hadron Collider are reported. The kinematic range 0.15<pT<50GeV/c and |η|<0.8 is covered. Results are presented in nine classes of collision centrality in the 0–80% range. For comparison, a pp reference at the collision energy of s=5.44 TeV is obtained by interpolating between existing pp measurements at s=5.02 and 7 TeV. The nuclear modification factors in central Xe–Xe collisions and Pb–Pb collisions at a similar center-of-mass energy of sNN=5.02 TeV, and in addition at 2.76 TeV, at analogous ranges of charged particle multiplicity density 〈dNch/dη〉 show a remarkable similarity at pT>10 GeV/c. The centrality dependence of the ratio of the average transverse momentum 〈pT〉 in Xe–Xe collisions over Pb–Pb collision at s=5.02 TeV is compared to hydrodynamical model calculations. © 2018 The Author
Original languageEnglish
Pages (from-to)166-179
Number of pages14
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume788
DOIs
Publication statusPublished - 2019

Bibliographical note

Export Date: 20 December 2018

Subject classification (UKÄ)

  • Subatomic Physics

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