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Probes of the small x gluon via exclusive J/ψ and Υ production at HERA and the LHC

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Abstract

New, more precise data on diffractive J/ψ photoproduction and on exclusive J/ψ production in the process pp → p + J/ψ + p at the LHC allow a better constraint on the low-x gluon distribution in the domain of relatively low scales Q 2 ~ 2–6 GeV2. We account for the ‘skewed’ effect and for the real part of the amplitude, as well as for the absorptive corrections in the case of the exclusive process pp → p + J/ψ + p. The predictions for exclusive J/ψ production at \( \sqrt{s} \) = 8 and 14 TeV and for exclusive \( Y \) (1S) production at 7, 8 and 14 TeV are also given. We present results at leading and next-to-leading order.

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Authors and Affiliations

  1. Department of Mathematical Sciences, University of Liverpool, Liverpool, L69 3BX, U.K

    S. P. Jones & T. Teubner

  2. Department of Physics and Institute for Particle Physics Phenomenology, University of Durham, Durham, DH1 3LE, U.K

    A. D. Martin & M. G. Ryskin

  3. Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, Gatchina, St. Petersburg, 188300, Russia

    M. G. Ryskin

Authors
  1. S. P. Jones
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  2. A. D. Martin
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  3. M. G. Ryskin
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  4. T. Teubner
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Correspondence to T. Teubner.

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ArXiv ePrint: 1307.7099

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Jones, S.P., Martin, A.D., Ryskin, M.G. et al. Probes of the small x gluon via exclusive J/ψ and Υ production at HERA and the LHC. J. High Energ. Phys. 2013, 85 (2013). https://doi.org/10.1007/JHEP11(2013)085

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  • DOI: https://doi.org/10.1007/JHEP11(2013)085

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