Light quark and antiquark constraints from new electroweak data
Abstract
We present a new parton distribution function analysis which includes new data for W boson production in proton-proton collisions and lepton pair production in proton-proton and proton-deuteron collisions. The new data provide strong constraints on the light antiquark parton distribution functions in the proton. We identify an interesting correlation between the d/u ratio and the d/u ratio which leads to a modification of our previous results for the d/u ratio as the parton momentum fraction x → 1.
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