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Abstract: We present a preliminary set of updated NLO parton distributions. For thefirst time we have a quantitative extraction of the strange quark and antiquarkdistributions and their uncertainties determined from CCFR and NuTeV dimuoncross sections. Additional jet data from HERA and the Tevatron improve ourgluon extraction. Lepton asymmetry data and neutrino structure functionsimprove the flavour separation, particularly constraining the down quarkvalence distribution.



Autor: R.S. Thorne, A.D. Martin, W.J. Stirling, G. Watt

Fuente: https://arxiv.org/







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