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

O. Kepka; C. Marquet; R. Peschanski; C. Royon

doi:10.1140/epjc/s10052-008-0587-5

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

O. Kepka
, C. Marquet
, R. Peschanski
, C. Royon

Institut Pierre Simon Laplace, CNRS and CEA
Riken BNL Research Center
Centre national de la recherche scientifique

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

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/dxdk _T 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.

Original language	English
Pages (from-to)	259-272
Number of pages	14
Journal	European Physical Journal C
Volume	55
Issue number	2
DOIs	https://doi.org/10.1140/epjc/s10052-008-0587-5
Publication status	Published - 1 May 2008
Externally published	Yes

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Cite this

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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/dxdk T 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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AU - Kepka, O.

AU - Marquet, C.

AU - Peschanski, R.

AU - Royon, C.

PY - 2008/5/1

Y1 - 2008/5/1

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AB - 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/dxdk T 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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JO - European Physical Journal C

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

Abstract

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