Abramowicz, H, Abt, I, Adamczyk, L, Adamus, M, Antonelli, S, Aushev, V, Aushev, Y, Behnke, O, Behrens, U, Bertolin, A et al (show 102 more authors)
(2017)
Studies of the diffractive photoproduction of isolated photons at HERA.
PHYSICAL REVIEW D, 96 (3).
Abstract
The photoproduction of isolated photons has been measured in diffractive events recorded by the ZEUS detector at HERA. Cross sections are evaluated in the photon transverse-energy and pseudorapidity ranges 5 < ETγ < 15 GeV and -0.7 < ηγ < 0.9, inclusively, and also with a jet with transverse energy and pseudorapidity in the ranges 4 < ETjet < 35 GeV and -1.5 < ηjet < 1.8, using a total integrated electronproton luminosity of 456 pb-1. A number of kinematic variables were studied and compared to predictions from the RAPGAP Monte Carlo model. An excess of data is observed above the RAPGAP predictions for z ℙmeas > 0.9, where z ℙmeas is the fraction of the longitudinal momentum of the colorless "Pomeron" exchange that is transferred to the photon-jet final state, giving evidence for direct Pomeron interactions.
Item Type: | Article |
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Depositing User: | Symplectic Admin |
Date Deposited: | 25 Oct 2017 12:20 |
Last Modified: | 19 Jan 2023 06:52 |
DOI: | 10.1103/PhysRevD.96.032006 |
Open Access URL: | https://arxiv.org/pdf/1705.10251.pdf |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3010517 |