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Measurement of exclusive ρ(770)0 photoproduction in ultraperipheral pPb collisions at √sNN=5.02Te

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2019
Sirunyan2019_Article_MeasurementOfExclusiveUprhoLef.pdf (1.975Mb)
Authors
Sirunyan, A M
Tumasyan, A
Adam, W
Ambrogi, F
Adžić, Petar
Ćirković, Predrag
Devetak, Damir
Đorđević, Miloš
Milošević, Jovan
Contributors
CMS Collaboration
CMS Collaboration (Ukupan broj autora: 2308)
Article (Published version)
,
© 2019, CERN for the benefit of the CMS collaboration
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Abstract
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. © 2019, CERN for the benefit of the CMS collaboration.
Source:
European Physical Journal C, 2019, 79, 8

DOI: 10.1140/epjc/s10052-019-7202-9

ISSN: 1434-6044

PubMed: 31524889

WoS: 000482213300004

Scopus: 2-s2.0-85071149423
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URI
http://vinar.vin.bg.ac.rs/handle/123456789/8463
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