A1 Journal article (refereed)
ϒ production in p–Pb collisions at √sNN = 8.16 TeV (2020)
ALICE Collaboration. (2020). ϒ production in p–Pb collisions at √sNN = 8.16 TeV. Physics Letters B, 806, Article 135486. https://doi.org/10.1016/j.physletb.2020.135486
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Publication details
All authors or editors: ALICE Collaboration
Journal or series: Physics Letters B
ISSN: 0370-2693
eISSN: 1873-2445
Publication year: 2020
Volume: 806
Article number: 135486
Publisher: Elsevier
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1016/j.physletb.2020.135486
Publication open access: Openly available
Publication channel open access: Open Access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71027
Publication is parallel published: https://arxiv.org/abs/1910.14405
Abstract
ϒ production in p–Pb interactions is studied at the centre-of-mass energy per nucleon–nucleon collision √sNN=8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals 2.03<3.53 and −4.46<−2.96, down to zero transverse momentum. In this work, results on the ϒ(1S) production cross section as a function of rapidity and transverse momentum are presented. The corresponding nuclear modification factor shows a suppression of the ϒ(1S) yields with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in the low transverse momentum region and shows no significant dependence on the centrality of the interactions. Furthermore, the ϒ(2S) nuclear modification factor is evaluated, suggesting a suppression similar to that of the ϒ(1S). A first measurement of the ϒ(3S) has also been performed. Finally, results are compared with previous ALICE measurements in p–Pb collisions at √sNN=5.02 TeV and with theoretical calculations.
Keywords: particle physics
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2020
JUFO rating: 2
