Transverse momentum (pT) spectra of charged particles at mid-pseudorapidity in Xe–Xe collisions at sNN 5.44 TeV measured with the ALICE apparatus at the Large Hadron Collider are reported. The kinematic range 0.15 < pT < 50 GeV/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.
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|Titolo:||Transverse momentum spectra and nuclear modification factors of charged particles in Xe–Xe collisions at sNN=5.44TeV|
|Data di pubblicazione:||2018|
|Appare nelle tipologie:||1.1 Articolo in rivista|