Linear vs non-linear QCD evolution: from HERA data to LHC phenomenology

J. L. Albacete, J. G. Milhano, P. Quiroga-Arias, J. Rojo

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Abstract

The very precise combined HERA data provides a testing ground in which the relevance of novel QCD regimes, other than the successful linear DGLAP evolution, in small-x inclusive DIS data can be ascertained. We present a study of the dependence of the AAMQS fits, based on the running coupling BK non-linear evolution equations (rcBK), on the fitted dataset. This allows for the identification of the kinematical region where rcBK accurately describes the data, and thus for the determination of its applicability boundary. We compare the rcBK results with NNLO DGLAP fits, obtained with the NNPDF methodology with analogous kinematical cuts. Further, we explore the impact on LHC phenomenology of applying stringent kinematical cuts to the low-x HERA data in a DGLAP fit.
Original languageEnglish
Pages (from-to)2131
Number of pages1
JournalEuropean Physical Journal C. Particles and Fields
VolumeC72
DOIs
Publication statusPublished - 5 Mar 2012

Bibliographical note

20 pages, 10 figures, simplified discussion of stability of fits

Keywords

  • hep-ph
  • hep-ex

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