Energy dependence of exclusive [Formula omitted] photoproduction off protons in ultra-peripheral p-Pb collisions at [Formula omitted] TeV

The ALICE Collaboration has measured the energy dependence of exclusive photoproduction of [Formula omitted] vector mesons off proton targets in ultra-peripheral p-Pb collisions at a centre-of-mass energy per nucleon pair [Formula omitted] TeV. The e [Formula omitted]e [Formula omitted] and [Formula...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2019-05, Vol.79 (5), p.1-18
Main Authors: Acharya, S, Acosta, F. T, Adam, J, Adamová, D, Adler, A, Adolfsson, J, Aggarwal, M. M
Format: Article
Language:English
Subjects:
Collisions
Cross-sections
Dependence
Energy measurement
Mesons
Nuclear energy
Particle collisions
Photoproduction
Protons
Vector mesons
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Summary:The ALICE Collaboration has measured the energy dependence of exclusive photoproduction of [Formula omitted] vector mesons off proton targets in ultra-peripheral p-Pb collisions at a centre-of-mass energy per nucleon pair [Formula omitted] TeV. The e [Formula omitted]e [Formula omitted] and [Formula omitted] decay channels are used to measure the cross section as a function of the rapidity of the [Formula omitted] in the range [Formula omitted], corresponding to an energy in the [Formula omitted]p centre-of-mass in the interval [Formula omitted] GeV. The measurements, which are consistent with a power law dependence of the exclusive [Formula omitted] photoproduction cross section, are compared to previous results from HERA and the LHC and to several theoretical models. They are found to be compatible with previous measurements.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-019-6816-2