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

ALICE Highlights

“…Since the same effect is not visible in the R pPb , where parton distributions play the same role as in Pb-Pb, the overall picture is consistent with interaction of colored particles (partons) with a colored (deconfined) medium produced only in Pb-Pb. Moreover, similar features between Xe-Xe and Pb-Pb collisions were found, in terms of R AA , when comparing the two systems at the same multiplicity ( Figure 11) [28]. Some deviations in peripheral collisions can be due to the selection of different centralities when requiring the same average multiplicity.…”

Extracting jet transport coefficient via single hadron and dihadron productions in high-energy heavy-ion collisions

“…This paper follows closely the above efforts and study the nuclear modifications of both single hadron and dihadron productions at high transverse momenta using a next-to-leading-order (NLO) perturbative QCD model combined with the higher-twist energy loss formalism. In particular, we perform a global χ 2 analysis on the nuclear modification data on single hadron and dihadron productions at RHIC [31][32][33][34] and the LHC [35][36][37][38][39][40][41][42] and quantitatively extract the values of jet quenching parameterq. Our analysis yieldsq/T 3 = 4.1 ∼ 4.4 at T = 378 MeV at RHIC andq/T 3 = 2.6 ∼ 3.3 at T = 486 MeV at the LHC.…”

“…The single hadron suppression factors in central Pb+Pb collisions at √ sNN = 5.02 TeV and in central Xe+Xe collisions at√ sNN = 5 44. TeV compared with CMS[38,39] and ALICE[37] data.C. Pb+Pb collisions at √ sNN = 5.02 TeV and Xe+Xe collisions at √ sNN = 5.44 TeV at the LHC Recently, ALICE [37] and CMS [38] Collaborations have published their measurements on the nuclear modification factor R AA for single hadron productions in Pb+Pb collisions at √ s NN = 5.02 TeV and Xe+Xe collisions at √ s NN = 5.44 TeV.…”

Particle Production in XeXe Collisions at the LHC within the Integrated Hydrokinetic Model

“…The other parameter α defines the proportion between the contributions N bin (b, r T ) and N w (b, r T ) from the "binary collisions" and the "wounded nucleons" models to the GLISSANDO energy-density profile. Note, that the quadrupole deformation of somewhat prolate xenon nuclei with deformation parameter β 2 = (0.18 ± 0.02) [8] also can be taken into account within the GLISSANDO code (for this purpose, the spherical nuclear radius R 0 is substituted in simulations by the polar angle θ-dependent value R(θ)…”

“…For quark-gluon phase at the hydrodynamics stage, the HotQCD Collaboration's equation of state was applied in current analysis [20] with particlization temperature T p = 156 MeV. In Figures 2-5, the transverse momentum spectra for all charged particles, pions, kaons, and protons calculated in the integrated hydrokinetic model for eight centrality classes are demonstrated together with the corresponding experimental data from the ALICE Collaboration [8,21]. From the plots, one can see that the model describes the experimental p T spectra for all the particle species and all the centrality classes quite well.…”