Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2010-06-21
AIP Conf. Proc. 1261, 85 (2010)
Physics
Nuclear Physics
Nuclear Theory
to appear in Achievements and New Directions in Subatomic Physics: Festschrift in Honour of Tony Thomas' 60th Birthday, Adelai
Scientific paper
I review quark momentum distributions in the nucleon at large momentum fractions x. Particular attention is paid to the impact of nuclear effects in deuterium on the d/u quark distribution ratio as x -> 1. A new global study of parton distributions, using less restrictive kinematic cuts in Q^2 and W^2, finds strong suppression of the d quark distribution once nuclear corrections are accounted for.
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