Measurement of exclusive Upsilon photoproduction from protons in pPb collisions at root sNN=5.02 Tev

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Measurement of exclusive Upsilon photoproduction from protons in pPb collisions at root sNN=5.02 Tev. European Physical Journal C, 79 (3). pp. 1-26. ISSN 1434-6044 E-ISSN 1434-6052

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Abstract

The exclusive photoproduction of ϒ(nS) meson states from protons, γ p → ϒ(nS) p (with n = 1, 2, 3), is studied in ultraperipheral pPb collisions at a centre-of-mass energy per nucleon pair of √sNN = 5.02 TeV. The measurement is performed using the ϒ(nS) → μ+μ− decay mode, with data collected by the CMS experiment corresponding to an integrated luminosity of 32.6 nb−1. Differential cross sections as functions of the ϒ(nS) transverse momentum squared p2 T, and rapidity y, are presented. The ϒ(1S) photoproduction cross section is extracted in the rapidity range |y| < 2.2, which corresponds to photon–proton centre-ofmass energies in the range 91 < Wγ p < 826 GeV. The data are compared to theoretical predictions based on perturbative quantum chromodynamics and to previous measurements.

Item Type:	Article (Journal)
Additional Information:	7861/79910
Uncontrolled Keywords:	Measurement of exclusive ϒ photoproduction; Protons in pPb collisions; √sNN = 5.02 TeV
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	01 Jul 2020 13:41
Last Modified:	01 Jul 2020 13:41
URI:	http://irep.iium.edu.my/id/eprint/79910

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