Title
Measurement of isolated photon production in deep-inelastic scattering at HERA
Date Issued
01 January 2008
Access level
open access
Resource Type
journal article
Author(s)
Aaron F.D.
Aktas A.
Alexa C.
Andreev V.
Antunovic B.
Aplin S.
Asmone A.
Astvatsatourov A.
Backovic S.
Baghdasaryan A.
Baranov P.
Barrelet E.
Bartel W.
Baudrand S.
Beckingham M.
Begzsuren K.
Behnke O.
Behrendt O.
Belousov A.
Berger N.
Bizot J.C.
Boenig M.O.
Boudry V.
Bozovic-Jelisavcic I.
Bracinik J.
Brandt G.
Brinkmann M.
Brisson V.
Bruncko D.
Büsser F.W.
Bunyatyan A.
Buschhorn G.
Bystritskaya L.
Campbell A.J.
Cantun Avila K.B.
Cassol-Brunner F.
Cerny K.
Cerny V.
Chekelian V.
Cholewa A.
Contreras J.G.
Coughlan J.A.
Cozzika G.
Cvach J.
Dainton J.B.
Daum K.
Deak M.
De Boer Y.
Delcourt B.
Del Degan M.
Delvax J.
De Roeck A.
De Wolf E.A.
Diaconu C.
Dodonov V.
Dubak A.
Eckerlin G.
Efremenko V.
Egli S.
Eichler R.
Eisele F.
Eliseev A.
Elsen E.
Essenov S.
Falkiewicz A.
Faulkner P.J.W.
Favart L.
Fedotov A.
Felst R.
Feltesse J.
Ferencei J.
Finke L.
Fleischer M.
Fomenko A.
Franke G.
Frisson T.
Gabathuler E.
Gayler J.
Ghazaryan S.
Ginzburgskaya S.
Glazov A.
Glushkov I.
Goerlich L.
Goettlich M.
Gogitidze N.
Gorbounov S.
Gouzevitch M.
Grab C.
Greenshaw T.
Grell B.R.
Grindhammer G.
Habib S.
Haidt D.
Hansson M.
Heinzelmann G.
Helebrant C.
Henderson R.C.W.
Henschel H.
Herrera G.
Hildebrandt M.
Publisher(s)
Springer New York
Abstract
The production of isolated photons in deep-inelastic scattering ep→eγX is measured with the H1 detector at HERA. The measurement is performed in the kinematic range of negative four-momentum transfer squared 4<Q2<150 GeV2 and a mass of the hadronic system WX>50 GeV. The analysis is based on a total integrated luminosity of 227 pb-1. The production cross section of isolated photons with a transverse energy in the range 3<ETγ<10 GeV and pseudorapidity range -1.2<ηγ<1.8 is measured as a function of ETγ, ηγ and Q2. Isolated photon cross sections are also measured for events with no jets or at least one hadronic jet. The measurements are compared with predictions from Monte Carlo generators modelling the photon radiation from the quark and the electron lines, as well as with calculations at leading and next to leading order in the strong coupling. The predictions significantly underestimate the measured cross sections. © 2008 Springer-Verlag / Società Italiana di Fisica.
Start page
371
End page
387
Volume
54
Issue
3
Language
English
OCDE Knowledge area
Física nuclear
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-41249088200
Source
European Physical Journal C
ISSN of the container
14346044
Sponsor(s)
Science and Technology Facilities Council - PP/E000444/1.
Sources of information:
Directorio de Producción Científica
Scopus