Photon–jet cross sections in deep-inelastic scattering View Full Text


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Article Info

DATE

2015-02-10

AUTHORS

P. Aurenche, M. Fontannaz

ABSTRACT

We present the complete next-to-leading order calculation of isolated prompt photon production in association with a jet in deep-inelastic scattering. The calculation involves, direct, resolved, and fragmentation contributions. It is shown that defining the transverse momenta in the proton virtual-photon frame (CM∗\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$^{*}$$\end{document}), as usually done, or in the laboratory frame, as done in some experiments, is not equivalent and leads to important differences concerning the perturbative approach. In fact, using the latter frame may preclude, under certain conditions, the calculation of the next-to-leading order correction to the important resolved component. A comparison with the latest ZEUS data is performed and good agreement is found in the perturbatively stable regions. More... »

PAGES

64

References to SciGraph publications

  • 2004-05. Isolated photon plus jet photoproduction as a toolto constrain the gluon distribution in the proton and the photon in EUROPEAN PHYSICAL JOURNAL C
  • 1994-06. Measuring the photon fragmentation function at LEP in ZEITSCHRIFT FÜR PHYSIK C PARTICLES AND FIELDS
  • 2001-06. Isolated prompt photon photoproduction at NLO in EUROPEAN PHYSICAL JOURNAL C
  • 2011-04-09. NLO calculation of prompt photon production in DIS at HERA in EUROPEAN PHYSICAL JOURNAL C
  • 2000. Large- in EUROPEAN PHYSICAL JOURNAL C
  • 2008-09-13. Jet–jet and hadron–jet correlations in hadro- and electroproduction in EUROPEAN PHYSICAL JOURNAL C
  • 1998-04. Quark and gluon fragmentation functions into photons in EUROPEAN PHYSICAL JOURNAL C
  • 2004-08. Forward production and associated transverse energy flow in deep-inelastic scattering at HERA in EUROPEAN PHYSICAL JOURNAL C
  • 2004-05. An NLO calculation of the electroproduction of large-E hadrons in EUROPEAN PHYSICAL JOURNAL C
  • 2005-07. Deep inelastic scattering and forward production at NLO in EUROPEAN PHYSICAL JOURNAL C
  • 2013-09-02. Isolating prompt photons with narrow cones in JOURNAL OF HIGH ENERGY PHYSICS
  • 2002-07-04. New Generation of Parton Distributions with Uncertainties from Global QCD Analysis in JOURNAL OF HIGH ENERGY PHYSICS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1140/epjc/s10052-015-3296-x

    DOI

    http://dx.doi.org/10.1140/epjc/s10052-015-3296-x

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1051341065


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