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Prompt photons in photoproduction at HERA

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Version 2 2024-06-04, 01:53
Version 1 2019-03-08, 10:54
journal contribution
posted on 2024-06-04, 01:53 authored by FD Aaron, M Aldaya Martin, C Alexa, V Andreev, B Antunovic, S Backovic, A Baghdasaryan, E Barrelet, W Bartel, K Begzsuren, A Belousov, JC Bizot, V Boudry, I Bozovic-Jelisavcic, J Bracinik, G Brandt, M Brinkmann, V Brisson, D Bruncko, A Bunyatyan, G Buschhorn, L Bystritskaya, AJ Campbell, KB Cantun Avila, K Cerny, V Cerny, V Chekelian, A Cholewa, JG Contreras, JA Coughlan, G Cozzika, J Cvach, JB Dainton, K Daum, M Deák, Y de Boer, B Delcourt, M del Degan, J Delvax, EA de Wolf, C Diaconu, V Dodonov, A Dossanov, A Dubak, G Eckerlin, V Efremenko, S Egli, A Eliseev, E Elsen, A Falkiewicz, L Favart, A Fedotov, R Felst, J Feltesse, J Ferencei, DJ Fischer, M Fleischer, A Fomenko, E Gabathuler, J Gayler, S Ghazaryan, A Glazov, I Glushkov, L Goerlich, N Gogitidze, M Gouzevitch, C Grab, T Greenshaw, BR Grell, G Grindhammer, S Habib, D Haidt, C Helebrant, RCW Henderson, E Hennekemper, H Henschel, M Herbst, G Herrera, M Hildebrandt, KH Hiller, D Hoffmann, R Horisberger, T Hreus, M Jacquet, X Janssen, L Jönsson, AW Jung, H Jung, M Kapichine, J Katzy, IR Kenyon, C Kiesling, M Klein, C Kleinwort, Gang LiGang Li
The production of prompt photons is measured in the photoproduction regime of electron-proton scattering at HERA. The analysis is based on a data sample corresponding to a total integrated luminosity of 340 pb -1 collected by the H1 experiment. Cross sections are measured for photons with transverse momentum and pseudorapidity in the range 6 < E Tγ GeV and -1.0 < η γ < 2.4, respectively. Cross sections for events with an additional jet are measured as a function of the transverse energy and pseudorapidity of the jet, and as a function of the fractional momenta x γ and x p carried by the partons entering the hard scattering process. The correlation between the photon and the jet is also studied. The results are compared with QCD predictions based on the collinear and on the k T factorization approaches.

History

Journal

European physical journal C

Volume

66

Pagination

17-33

Location

Berlin, Germany

Open access

  • Yes

ISSN

1434-6044

eISSN

1434-6052

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2010, Springer-Verlag / Società Italiana di Fisica

Issue

1-2

Publisher

Springer