TY - JOUR
T1 - Diffractive production of isolated photons with the zeus detector at hera
AU - On behalf of the ZEUS Collaboration
AU - Levy, Aharon
N1 - Publisher Copyright:
© Copyright owned by the author(s).
PY - 2017
Y1 - 2017
N2 - 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 < ET γ <15 GeV and −0.7 < ηγ < 0.9 inclusively and also with a jet with transverse energy and pseudorapidity in the ranges 4< ET jet < 35 GeV and -1.5< η jet < 1.8, using a total integrated electron–proton luminosity of 374 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 zmeas IP > 0.9, where zmeas IP is the fraction of the longitudinal momentum of the colourless “Pomeron” exchange that is transferred to the photon–jet final state, giving evidence for direct Pomeron interactions.
AB - 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 < ET γ <15 GeV and −0.7 < ηγ < 0.9 inclusively and also with a jet with transverse energy and pseudorapidity in the ranges 4< ET jet < 35 GeV and -1.5< η jet < 1.8, using a total integrated electron–proton luminosity of 374 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 zmeas IP > 0.9, where zmeas IP is the fraction of the longitudinal momentum of the colourless “Pomeron” exchange that is transferred to the photon–jet final state, giving evidence for direct Pomeron interactions.
UR - http://www.scopus.com/inward/record.url?scp=85076584501&partnerID=8YFLogxK
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AN - SCOPUS:85076584501
SN - 1824-8039
JO - Proceedings of Science
JF - Proceedings of Science
T2 - 2017 European Physical Society Conference on High Energy Physics, EPS-HEP 2017
Y2 - 5 July 2017 through 12 July 2017
ER -