Abstract
The exclusive photoproduction of (nS) meson states from protons, (nS) p
(with n = 1, 2, 3), is studied in ultraperipheral pPb collisions at a
centre-of-mass energy per nucleon pair of The measurement is performed
using the 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 nS) transverse momentum squared and
rapidity y, are presented. The 1S) photoproduction cross section is
extracted in the rapidity range < 2.2, which corresponds to
photon-proton centre-of-mass energies in the range 91 W < 826 GeV. The
data are compared to theoretical predictions based on perturbative
quantum chromodynamics and to previous measurements.