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Next-to-leading BFKL phenomenology of forward-jet cross sections at HERA

  • Regular Article - Theoretical Physics
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Abstract

We show that the forward-jet measurements performed at HERA allow for a detailed study of corrections due to next-to-leading logarithms (NLL) in the Balitsky–Fadin–Kuraev–Lipatov (BFKL) approach. While the description of the dσ/dx data shows small sensitivity to NLL-BFKL corrections, these can be tested by the triple differential cross section d3σ/dxdkT 2dQ2 recently measured. These data can be successfully described using a renormalization-group improved NLL kernel, while the standard next-to-leading-order QCD or leading-logarithm BFKL approaches fail to describe the same data in the whole kinematic range. We present a detailed analysis of the NLL scheme and renormalization-scale dependences and also discuss the photon impact factors.

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Authors and Affiliations

  1. IRFU/Service de physique des particules, CEA/Saclay, 91191, Gif-sur-Yvette cedex, France

    O. Kepka & C. Royon

  2. RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, NY, 11973, USA

    C. Marquet

  3. Institut de physique théorique, CEA/Saclay, 91191, Gif-sur-Yvette cedex, France

    R. Peschanski

  4. URA 2306, unité de recherche associée au CNRS, Gif-Sur-Yvette, France

    R. Peschanski

Authors
  1. O. Kepka
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  2. C. Marquet
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  3. R. Peschanski
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  4. C. Royon
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Corresponding author

Correspondence to C. Royon.

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Kepka, O., Marquet, C., Peschanski, R. et al. Next-to-leading BFKL phenomenology of forward-jet cross sections at HERA. Eur. Phys. J. C 55, 259–272 (2008). https://doi.org/10.1140/epjc/s10052-008-0587-5

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  • DOI: https://doi.org/10.1140/epjc/s10052-008-0587-5

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