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

Abstract

Transverse momentum ( ) spectra of charged particles at mid-pseudorapidity in Xe–Xe collisions at measured with the ALICE apparatus at the Large Hadron Collider are reported. The kinematic range and 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 TeV is obtained by interpolating between existing pp measurements at and 7 TeV. The nuclear modification factors in central Xe–Xe collisions and Pb–Pb collisions at a similar center-of-mass energy of TeV, and in addition at 2.76 TeV, at analogous ranges of charged particle multiplicity density show a remarkable similarity at . The centrality dependence of the ratio of the average transverse momentum in Xe–Xe collisions over Pb–Pb collision at TeV is compared to hydrodynamical model calculations.