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Title: | Charged-particle nuclear modification factors in XeXe collisions at √sNN=5.44 TeV |
Authors: | Sirunyan, AM Tumasyan, A Adam, W Ambrogi, F Asilar, E Bergauer, T Brandstetter, J Dragicevic, M Erö, J Escalante Del Valle, A Flechl, M Frühwirth, R Ghete, VM Hrubec, J Jeitler, M Krammer, N Krätschmer, I Liko, D Madlener, T Mikulec, I Rad, N Rohringer, H Schieck, J Schöfbeck, R Spanring, M Spitzbart, D Taurok, A Waltenberger, W Wittmann, J Wulz, CE Zarucki, M Chekhovsky, V Mossolov, V Suarez Gonzalez, J De Wolf, EA Di Croce, D Janssen, X Lauwers, J Pieters, M Van Haevermaet, H Van Mechelen, P Van Remortel, N Abu Zeid, S Blekman, F D Hondt, J De Bruyn, I De Clercq, J Deroover, K Flouris, G Lontkovskyi, D Lowette, S Marchesini, I Moortgat, S Moreels, L Python, Q Skovpen, K Tavernier, S Van Doninck, W Van Mulders, P Van Parijs, I Beghin, D Bilin, B Brun, H Clerbaux, B De Lentdecker, G Delannoy, H Dorney, B Fasanella, G Favart, L Goldouzian, R Grebenyuk, A Kalsi, AK Lenzi, T Luetic, J Postiau, N Starling, E Thomas, L Vander Velde, C Vanlaer, P Vannerom, D Wang, Q Cornelis, T Dobur, D Fagot, A Gul, M Khvastunov, I Poyraz, D Roskas, C Trocino, D Tytgat, M Verbeke, W Vermassen, B Vit, M Zaganidis, N Bakhshiansohi, H |
Keywords: | Hadron-Hadron scattering (experiments);Heavy-ion collision;Quark gluon plasma |
Issue Date: | 2018 |
Publisher: | Springer |
Citation: | Journal of High Energy Physics, 2018, 2018 (10) |
Abstract: | are measured using xenon-xenon (XeXe) collisions at √sNN = 5.44TeV. The data, corresponding to an integrated luminosity of 3.42µb−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 100GeV. A previously reported pT spectrum from proton-proton collisions at √s = 5.02TeV is used for comparison after correcting for the difference in center-of-mass energy. The nuclear modification factors using this reference, R∗AA, are constructed and compared to previous measurements and theoretical predictions. In head-on collisions, the R∗AA has a value of 0.17 in the pT range of 6–8GeV, but increases to approximately 0.7 at 100GeV. Above ≈6GeV, the XeXe data show a notably smaller suppression than previous results for lead-lead (PbPb) collisions at √sNN = 5.02TeV 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. |
URI: | http://bura.brunel.ac.uk/handle/2438/17304 |
DOI: | http://dx.doi.org/10.1007/JHEP10(2018)138 |
ISSN: | 1126-6708 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
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