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Publikācija: Charged-Particle Nuclear Modification Factors in XeXe Collisions at √sNN = 5.44 TeV

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Nosaukums oriģinālvalodā Charged-Particle Nuclear Modification Factors in XeXe Collisions at √sNN = 5.44 TeV
Pētniecības nozare 1. Dabaszinātnes
Pētniecības apakšnozare 1.3. Fizika un astronomija
Autori Viesturs Veckalns
CERN international group of authors
Atslēgas vārdi Hadron-Hadron scattering (experiments), Heavy-ion collision, Quark gluon plasma
Anotācija The differential yields of charged particles having pseudorapidity within |η| < 1 are measured using xenon-xenon (XeXe) collisions at sNN=5.44 TeV. The data, corresponding to an integrated luminosity of 3.42 μb−1, were collected in 2017 by the CMS experiment at the LHC. The yields are reported as functions of collision centrality and transverse momentum, pT, from 0.5 to 100 GeV. A previously reported pT spectrum from proton-proton collisions at s=5.02 TeV is used for comparison after correcting for the difference in center-of-mass energy. The nuclear modification factors using this reference, RAA*, are constructed and compared to previous measurements and theoretical predictions. In head-on collisions, the RAA* has a value of 0.17 in the pT range of 6–8 GeV, but increases to approximately 0.7 at 100 GeV. Above ≈6 GeV, the XeXe data show a notably smaller suppression than previous results for lead-lead (PbPb) collisions at sNN=5.02 TeV when compared at the same centrality (i.e., the same fraction of total cross section). However, the XeXe suppression is slightly greater than that for PbPb in events having a similar number of participating nucleons.
DOI: 10.1007/JHEP10(2018)138
Hipersaite: https://link.springer.com/article/10.1007%2FJHEP10%282018%29138 
Atsauce Veckalns, V., international group of authors, C. Charged-Particle Nuclear Modification Factors in XeXe Collisions at √sNN = 5.44 TeV. Journal of High Energy Physics, 2018, Vol.2018, Iss.10, 1.-10.lpp. ISSN 1126-6708. Pieejams: doi:10.1007/JHEP10(2018)138
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ID 28707