@article{10902/28623,
year = {2022},
url = {https://hdl.handle.net/10902/28623},
abstract = {Production cross sections of Υ(1S), Υ(2S), and Υ(3S) states decaying into μ+μ− in proton-lead (pPb) collisions are reported using data collected by the CMS experiment at √sNN = 5.02 TeV. A comparison is made with corresponding cross sections obtained with pp data measured at the same collision energy and scaled by the Pb nucleus mass number. The nuclear modification factor for Υ(1S) is found to be RpPb(Υ(1S)) = 0.806±0.024 (stat)±0.059 (syst). Similar results for the excited states indicate a sequential suppression pattern, such that RpPb(Υ(1S)) > RpPb(Υ(2S)) > RpPb(Υ(3S)). The suppression of all states is much less pronounced in pPb than in PbPb collisions, and independent of transverse momentum p Υ T and center-of-mass rapidity y Υ CM of the individual Υ state in the studied range p Υ T < 30 GeV/c and |y Υ CM| < 1.93. Models that incorporate final-state effects of bottomonia in pPb collisions are in better agreement with the data than those which only assume initial-state modifications.},
publisher = {Elsevier},
publisher = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2022, 835, 137397},
title = {Nuclear modification of Y states in pPb collisions at √sNN = 5.02 TeV},
author = {Tumasyan, A. and Cabrillo Bartolomé, José Iban and Calderón Tazón, Alicia and Chazin Quero, Bárbara and Duarte Campderros, Jorge and Fernández García, Marcos and Fernández Manteca, Pedro José and García Alonso, Andrea and Gómez Gramuglio, Gervasio and Martínez Rivero, Celso and Martínez Ruiz del Árbol, Pablo and Matorras Weinig, Francisco and Piedra Gómez, Jonatan and Prieëls, Cedric and Ricci-Tam, Francesca Shun-Ning Annarosa and Rodrigo Anoro, Teresa and Ruiz Jimeno, Alberto and Russo, Lorenzo and Scodellaro, Luca and Vila Álvarez, Iván  and Vizán García, Jesús Manuel},
}