Measurement of exclusive Υ photoproduction from protons in p Pb collisions at √sNN=5.02TeV

CMS Collaboration

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The exclusive photoproduction of Υ (nS) meson states from protons, γp→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 sNN=5.02TeV. 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 32.6nb-1. Differential cross sections as functions of the Υ (nS) transverse momentum squared pT2, 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<Wγp<826GeV. The data are compared to theoretical predictions based on perturbative quantum chromodynamics and to previous measurements.

Original languageEnglish
Article number277
JournalEuropean Physical Journal C
Volume79
Issue number3
DOIs
Publication statusPublished - 2019 Mar 1

Keywords

  • CMS
  • UPC
  • Y
  • pPb
  • photoproduction

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Measurement of exclusive Υ photoproduction from protons in p Pb collisions at √sNN=5.02TeV'. Together they form a unique fingerprint.

  • Cite this