Measurement of exclusive ρ(770) 0 photoproduction in ultraperipheral pPb collisions at √s NN = 5.02 TeV
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Type :
Article
Publication Status :
Published
Access :
openAccess
Abstract
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.
Source :
European Physical Journal C
Date :
2019-08
Volume :
79
Issue :
8
Publisher :
Springer Nature
URI
http://hdl.handle.net/10679/6700https://link.springer.com/article/10.1140/epjc/s10052-019-7202-9
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