Measurement of Exclusive ρ(770)0 Photoproduction in Ultraperipheral pPb Collisions at √sNN = 5.02 TeV
European Physical Journal C 2019
Viesturs Veckalns, et al 100

Exclusive ρ(770)0 photoproduction is measured for the first time in ultraperipheral pPb collisions at sNN=5.02Te with the CMS detector. The cross section σ(γp→ρ(770)0p) is 11.0±1.4(stat)±1.0(syst)μb at ⟨Wγp⟩=92.6Ge for photon–proton centre-of-mass energies Wγp between 29 and 213Ge. The differential cross section d σ/ d | t| is measured in the interval 0.025<|t|<1Ge2 as a function of Wγp, 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 σ(γp→ρ(770)0p) has a power-law dependence on the photon–proton centre-of-mass, consistent with electron–proton collision measurements performed at HERA. The Wγp dependence of the exponential slope of the differential cross section d σ/ d | t| is also measured.


DOI
10.1140/epjc/s10052-019-7202-9
Hyperlink
https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-7202-9

Veckalns, V., 100, e. Measurement of Exclusive ρ(770)0 Photoproduction in Ultraperipheral pPb Collisions at √sNN = 5.02 TeV. European Physical Journal C, 2019, Vol. 79, No. 8, pp.1-10. ISSN 1434-6044. e-ISSN 1434-6052. Available from: doi:10.1140/epjc/s10052-019-7202-9

Publication language
English (en)
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