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Title
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Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA
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Author
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Abstract
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The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positronproton scattering at HERA. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 126 pb−1. The analysis covers the range of negative four momentum transfer squared at the positron vertex 67.9 as a function of its transverse momentum pTlead and longitudinal momentum fraction of the incoming proton xLlead. In addition, the cross sections are studied as a function of the sum of the longitudinal momentum fraction xLsum of all photons in the pseudorapidity range η>7.9. The cross sections are normalised to the inclusive deep-inelastic scattering cross section and compared to the predictions of models of deep-inelastic scattering and models of the hadronic interactions of high energy cosmic rays. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2011
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-011-1771-6
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Volume/pages
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71
:10
(2011)
, p. 1771,1-1771,11
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Article Reference
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1771
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ISI
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000296631800009
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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