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Title
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Measurement of exclusive photoproduction in ultraperipheral pPb collisions at =5.02 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| Exclusive.(770) 0 photoproduction is measured for the first time in ultraperipheral pPb collisions at v s NN = 5.02 TeV with the CMS detector. The cross section s(.p..(770) 0 p) is 11.0 +/- 1.4 (stat) +/- 1.0 (syst) mu b at W. p = 92.6GeV for photon-proton centre-of-mass energies W. p between 29 and 213 GeV. The differential cross section ds/d| t| is measured in the interval 0.025 < | t| < 1GeV 2 as a function of W. p, where t is the squared four-momentum transfer at the proton vertex. The results are compared with previous measurements and theoretical predictions. The measured cross section s(.p..(770) 0 p) has a power-law dependence on the photon-proton centre-of-mass, consistent with electron-proton collision measurements performed at HERA. The W. p dependence of the exponential slope of the differential cross section ds/d| t| is also measured. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2019
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-019-7202-9
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Volume/pages
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79
:8
(2019)
, 27 p.
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Article Reference
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702
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ISI
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000482213300004
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Pubmed ID
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31524889
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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