The improved nuclear parton distributions
نویسندگان
چکیده
منابع مشابه
The improved nuclear parton distributions
In this paper we propose an improvement of the EKS nuclear parton distributions for the small x region of high energy processes, where the perturbative high parton density effects cannot be disregarded. We analyze the behavior of the ratios xGA/xGN and F A 2 /F D 2 and verify that at small x they are strongly modified when compared to the EKS predictions. The implications of our results for the...
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Optimum nuclear parton distributions are obtained by analyzing available experimental data on electron and muon deep inelastic scattering (DIS). The distributions are given at Q 2 =1 GeV 2 with a number of parameters, which are determined by a χ 2 analysis of the data. Valence-quark distributions are relatively well determined at medium x, but they are slightly dependent on the assumed parametr...
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Determination of the nuclear parton distributions within the framework of perturbative QCD, the DGLAP equations in particular, is discussed. Scale and flavour dependent nuclear effects in the parton distributions are compared with the scale and flavour independent parametrizations of HIJING and of the Hard Probe Collaboration. A comparison with the data from deep inelastic lepton-nucleus scatte...
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Nuclear parton distributions fA(x, Q ) are studied within a framework of the DGLAP evolution. Measurements of F 2 /F D 2 in deep inelastic lA collisions, and Drell–Yan dilepton cross sections measured in pA collisions are used as constraints. Also conservation of momentum and baryon number is required. It is shown that the calculated Q evolution of F Sn 2 /F C 2 agrees very well with the recent...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2001
ISSN: 1434-6044,1434-6052
DOI: 10.1007/s100520100654