HAL : in2p3-00740426, version 1

arXiv : 1203.1043

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

J. L. Albacete1, 2, J. G. Milhano, P. Quiroga-Arias3, J. Rojo

(2012)

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.

1 :	IPNO - Institut de Physique Nucléaire d'Orsay
2 :	IPHT - Institut de Physique Théorique (ex SPhT)
3 :	LPTHE - Laboratoire de Physique Théorique et Hautes Energies

Thème(s)

:

Physique/Physique des Hautes Energies - Expérience Physique/Physique des Hautes Energies - Phénoménologie

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Contributeur : Sophie Heurteau <>

Soumis le : Mercredi 10 Octobre 2012, 10:53:53

Dernière modification le : Mercredi 10 Octobre 2012, 13:47:30