Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/17698
Title: Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at s<inf>NN</inf>=5.02 TeV
Authors: Sirunyan, AM
Tumasyan, A
Adam, W
Ambrogi, F
Asilar, E
Bergauer, T
Brandstetter, J
Brondolin, E
Dragicevic, M
Erö, J
Escalante Del Valle, A
Flechl, M
Friedl, M
Frühwirth, R
Ghete, VM
Grossmann, J
Hrubec, J
Jeitler, M
König, A
Krammer, N
Krätschmer, I
Liko, D
Madlener, T
Mikulec, I
Pree, E
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
Van De Klundert, 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
Maerschalk, T
Seva, T
Starling, E
Vander Velde, C
Vanlaer, P
Vannerom, D
Yonamine, R
Zenoni, F
Cornelis, T
Dobur, D
Fagot, A
Gul, M
Khvastunov, I
Poyraz, D
Roskas, C
Salva, S
Trocino, D
Tytgat, M
Verbeke, W
Vit, M
Zaganidis, N
Keywords: CMS;Physics;Bottomonium;Quarkonium suppression;Quark gluon plasma;Heavy ion collisions
Issue Date: 17-Jan-2019
Publisher: Elsevier
Citation: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2019, 790 pp. 270 - 293
Abstract: The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at sNN=5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S))>RAA(ϒ(2S))>RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at sNN=2.76TeV, although the two are compatible within uncertainties. The upper limit on the RAA of ϒ(3S) integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date.
URI: http://bura.brunel.ac.uk/handle/2438/17698
DOI: http://dx.doi.org/10.1016/j.physletb.2019.01.006
ISSN: 0370-2693
http://dx.doi.org/10.1016/j.physletb.2019.01.006
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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