Nuclear gluon distributions in a parton model
نویسندگان
چکیده
منابع مشابه
Nuclear Gluon Distributions in a Parton Model
Gluon distributions in the carbon and tin nuclei are investigated by using a Q 2 rescaling model with parton recombination effects. We obtain strong shadowings in the small x region due to the recombinations. The ratio G A (x)/G N (x) in the medium x region is typically 0.9 for medium size nuclei. At large x, the ratio becomes large due to gluon fusions from different nucleons. Comparisons with...
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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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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: Physics Letters B
سال: 1993
ISSN: 0370-2693
DOI: 10.1016/0370-2693(93)91725-3