منابع مشابه
Nuclear Parton Distribution Functions
We study nuclear e ects of charged current deep inelastic neutrino-iron scattering in the framework of a χ analysis of parton distribution functions (PDFs). We extract a set of iron PDFs which are used to compute xBj-dependent and Q -dependent nuclear correction factors for iron structure functions which are required in global analyses of free nucleon PDFs. We compare our results with nuclear c...
متن کاملNuclear corrections of parton distribution functions
A ′ 2 and proton-nucleus Drell-Yan cross-section ratios σ pA DY /σ pA ′ DY in order to determine optimum parton distribution functions (PDFs) in nuclei. An important point of this analysis is to show uncertainties of the distributions by the Hessian method. The results indicate that the uncertainties are large for gluon distributions in the whole x region and for antiquark distributions at x > ...
متن کاملNuclear Modification to Parton Distribution Functions and Parton Saturation
Abstract. We introduce a generalized definition of parton distribution functions (PDFs) for a more consistent all-order treatment of power corrections. We present a new set of modified DGLAP evolution equations for nuclear PDFs, and show that the resummed αsA /Q-type of leading nuclear size enhanced power corrections significantly slow down the growth of gluon density at small-x. We discuss the...
متن کاملGlobal NLO Analysis of Nuclear Parton Distribution Functions
Nuclear parton distribution functions (NPDFs) are determined by a global analysis of experimental measurements on structure-function ratios FA 2 /F A 2 and Drell-Yan cross section ratios σ A DY /σA ′ DY , and their uncertainties are estimated by the Hessian method. The NPDFs are obtained in both leading order (LO) and next-to-leading order (NLO) of αs. As a result, valence-quark distributions a...
متن کاملA Global Reanalysis of Nuclear Parton Distribution Functions
We determine the nuclear modifications of parton distribution functions of bound protons at scales Q 2 ≥ 1.69 GeV 2 and momentum fractions 10 −5 ≤ x ≤ 1 in a global analysis which utilizes nuclear hard process data, sum rules and leading-order DGLAP scale evolution. The main improvements over our earlier work EKS98 are the automated χ 2 minimization, simplified and better controllable fit funct...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2009
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2009.03.110