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http://hdl.handle.net/2445/185378
Title: | Study of ϒ production in pPb collisions at √sNN=8.16 TeV |
Author: | Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Graciani Díaz, Ricardo Graugés Pous, Eugeni Vazquez Gomez, R. Marin Benito, Carla LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | 2018 |
Publisher: | Springer Verlag |
Abstract: | Abstract: The production of Υ(nS) mesons (n = 1, 2, 3) in pPb and Pbp collisions at a centre-of-mass energy per nucleon pair √ sNN = 8.16 TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 nb−1 . The Υ(nS) mesons are reconstructed through their decays into two opposite-sign muons. The measurements comprise the differential production cross-sections of the Υ(1S) and Υ(2S) states, their forward-to-backward ratios and nuclear modification factors. The measurements are performed as a function of the transverse momentum pT and rapidity in the nucleon-nucleon centre-of-mass frame y ∗ of the Υ(nS) states, in the kinematic range pT < 25 GeV/c and 1.5 < y∗ < 4.0 (−5.0 < y∗ < −2.5) for pPb (Pbp) collisions. In addition, production cross-sections for Υ(3S) are measured integrated over phase space and the production ratios between all three Υ(nS) states are determined. Suppression for bottomonium in proton-lead collisions is observed, which is particularly visible in the ratios. The results are compared to theoretical models. |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP11(2018)194 |
It is part of: | Journal of High Energy Physics, 2018, vol. 2018, num. 11, p. 1-36 |
URI: | http://hdl.handle.net/2445/185378 |
Related resource: | https://doi.org/10.1007/JHEP11(2018)194 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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