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Measurement of Feynman-x Spectra of Photons and Neutrons in the Very Forward Direction in Deep-Inelastic Scattering at HERA


H1 Collaboration; Andreev, V; Baghdasaryan, A; Beazsuren, K; Belusov, A; Belov, P; Müller, K; Robmann, P; Straumann, U; Truöl, P; et al (2014). Measurement of Feynman-x Spectra of Photons and Neutrons in the Very Forward Direction in Deep-Inelastic Scattering at HERA. European Physical Journal C - Particles and Fields, 74(2915):online.

Abstract

Measurements of normalised cross sections for the production of photons and neutrons at very small angles with respect to the proton beam direction in deep-inelastic ep scattering at HERA are presented as a function of the Feynman variable xF and of the centre-of-mass energy of the virtual photon-proton system W . The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 131 pb−1 . The measurement is restricted to photons and neutrons in the pseudorapidity range η>7.9 and covers the range of negative four momentum transfer squared at the positron vertex \(6 GeV 2 , of inelasticity \(0.05 and of \(70 GeV. To test the Feynman scaling hypothesis the W dependence of the xF dependent cross sections is investigated. Predictions of deep-inelastic scattering models and of models for hadronic interactions of high energy cosmic rays are compared to the measured cross sections.

Abstract

Measurements of normalised cross sections for the production of photons and neutrons at very small angles with respect to the proton beam direction in deep-inelastic ep scattering at HERA are presented as a function of the Feynman variable xF and of the centre-of-mass energy of the virtual photon-proton system W . The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 131 pb−1 . The measurement is restricted to photons and neutrons in the pseudorapidity range η>7.9 and covers the range of negative four momentum transfer squared at the positron vertex \(6 GeV 2 , of inelasticity \(0.05 and of \(70 GeV. To test the Feynman scaling hypothesis the W dependence of the xF dependent cross sections is investigated. Predictions of deep-inelastic scattering models and of models for hadronic interactions of high energy cosmic rays are compared to the measured cross sections.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2014
Deposited On:20 Nov 2014 07:30
Last Modified:05 Apr 2016 18:31
Publisher:Springer
ISSN:1434-6044
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1140/epjc/s10052-014-2915-2
Related URLs:http://arxiv.org/abs/1404.0201

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