Global analysis of nuclear parton distributions
نویسندگان
چکیده
منابع مشابه
Global QCD Analysis of Parton Distributions
Recent global QCD analyses of high energy lepton-hadron and hadron-hadron interactions are reviewed. New data on asymmetries in Drell-Yan and W-lepton-asymmetry processes contribute to better determine the d=u ratio; while improved experimental data on inclusive jet production, in conjunction with precise deep inelastic scattering data, place good constraints on the gluon over a wide range of x...
متن کاملNuclear Parton Distributions - a DGLAP Analysis 1
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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We present a new analysis of parton distributions of the proton. This incorporates a wide range of new data and an improved treatment of heavy flavours and prompt photon production. The new set (MRST) shows systematic differences from previous sets of partons which can be identified with particular features of the new data and with improvements in the analysis. We also investigate the sensitivi...
متن کاملParametrization of Nuclear Parton Distributions
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...
متن کاملGlobal Fits of Parton Distributions
The fundamental quantities one requires in the calculation of scattering processes involving hadronic particles are the parton distributions. Global fits [1]-[7] use all available data, largely structure functions, and the most up-todate QCD calculations, currently NLO–in–αs(Q ), to best determine these parton distributions and their consequences. In the global fits input partons are parameteri...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2012
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.85.074028