Measurement of photon production in the very forward direction in deep-inelastic scattering at HERAReport as inadecuate




Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA - Download this document for free, or read online. Document in PDF available to download.

The European Physical Journal C

, 71:1771

First Online: 13 October 2011Received: 29 June 2011Revised: 01 September 2011

Abstract

The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron–proton 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. The analysis covers the range of negative four momentum transfer squared at the positron vertex 67.9

as a function of its transverse momentum \p {T}^{\mathrm{lead}}\ and longitudinal momentum fraction of the incoming proton \x {L}^{\mathrm{lead}}\. In addition, the cross sections are studied as a function of the sum of the longitudinal momentum fraction \x {L}^{\mathrm{sum}}\ 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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Author: The H1 Collaboration - F. D. Aaron - C. Alexa - V. Andreev - S. Backovic - A. Baghdasaryan - S. Baghdasaryan - E. Barrelet

Source: https://link.springer.com/







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