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

作者：Kepka O^*; Marquet C; Peschanski R; Royon C

来源：European Physical Journal C, 2008, 55(2): 259-272.

DOI：10.1140/epjc/s10052-008-0587-5

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 d sigma/dx data shows small sensitivity to NLL-BFKL corrections, these can be tested by the triple differential cross section d(3)sigma/dxdk(T)(2)dQ(3) 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.

• 出版日期2008-5
• 单位中国地震局