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

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.
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Contributor : Sophie Heurteau <>
Submitted on : Wednesday, October 10, 2012 - 10:53:53 AM
Last modification on : Wednesday, September 16, 2020 - 4:08:15 PM

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J. L. Albacete, J. G. Milhano, P. Quiroga-Arias, J. Rojo. Linear vs. non-linear QCD evolution: from HERA data to LHC phenomenology. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2012, 72 (9), pp.2131. ⟨10.1140/epjc/s10052-012-2131-x⟩. ⟨in2p3-00740426⟩



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