We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Measurement of exclusive Υ photoproduction from protons in pPb collisions at sNN=5.02TeV.
- Authors
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Del Valle, A. Escalante; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Grossmann, J.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, N.
- 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 p Pb collisions at a centre-of-mass energy per nucleon pair of s NN = 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 p T 2 , and rapidity y, are presented. The Υ (1 S) photoproduction cross section is extracted in the rapidity range | y | < 2.2 , which corresponds to photon–proton centre-of-mass energies in the range 91 < W γ p < 826 GeV . The data are compared to theoretical predictions based on perturbative quantum chromodynamics and to previous measurements.
- Subjects
PROTON-proton interactions; MESONS; DIFFERENTIAL cross sections; QUANTUM chromodynamics
- Publication
European Physical Journal C -- Particles & Fields, 2019, Vol 79, Issue 3, pN.PAG
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-019-6774-8