Charged-particle nuclear modification factors in XeXe collisions at √s_NN = 5.44 TeV

Show simple item record CMS Collaboration Buccilli, A. Cooper, S.I. Henderson, C. Rumerio, P. West, C. 2022-08-02T15:20:08Z 2022-08-02T15:20:08Z 2018
dc.identifier.citation Sirunyan, A. M., 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, V. M., Hrubec, J., Jeitler, M., Krammer, N., Krätschmer, I., Liko, D., … Woods, N. (2018). Charged-particle nuclear modification factors in XeXe collisions at $ \sqrt{s_{\mathrm{NN}}} = 5.44 $ TeV. In Journal of High Energy Physics (Vol. 2018, Issue 10). Springer Science and Business Media LLC. en_US
dc.description.abstract The differential yields of charged particles having pseudorapidity within |η| < 1 are measured using xenon-xenon (XeXe) collisions at \(\sqrt{{s}_{NN}}=\phantom{\rule{0.25em}{0ex}}5.44\) 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, \(p_T\), from 0.5 to 100 GeV. A previously reported \(p_{T}\) spectrum from proton-proton collisions at \(\sqrt{s}=5.02\) TeV is used for comparison after correcting for the difference in center-of-mass energy. The nuclear modification factors using this reference, \(R_{AA}^{*}\), 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 \(p_{T}\) 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 \(\sqrt{{s}_{NN}}=5.02\) 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. en_US
dc.format.mimetype application/pdf
dc.language English
dc.subject Hadron-Hadron scattering (experiments) en_US
dc.subject Heavy-ion collision en_US
dc.subject Quark gluon plasma en_US
dc.title Charged-particle nuclear modification factors in XeXe collisions at √s_NN = 5.44 TeV en_US
dc.type text

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