Experimental tests of charge symmetry violation in parton distributions
نویسندگان
چکیده
منابع مشابه
A New Analysis of Charge Symmetry Violation in Parton Distributions
To date, the strongest indication of charge symmetry violation in parton distributions has been obtained by comparing the F2 structure functions from CCFR neutrino data and NMC muon data. We show that in order to make precise tests of charge symmetry with the neutrino data, two conditions must be satisfied. First, the nuclear shadowing calculations must be made explicitly for neutrinos, not sim...
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متن کاملEvidence for Charge Symmetry Violation in Parton Distributions
By comparing structure functions measured in neutrino and charged lepton deep inelastic scattering, one can test the validity of parton charge symmetry. New experiments allow us to make such tests, which set rather tight upper limits on parton charge symmetry violation [CSV] for intermediate Bjorken x, but which appear to show sizable CSV effects at small x. We show that neither nuclear shadowi...
متن کاملValidity of Flavor Symmetry and Charge Symmetry for Parton Distributions
Recent experimental measurements of the Gottfried Sum Rule, and pp and pD Drell-Yan processes, suggest significant violation of flavor symmetry in the proton sea. This interpretation rests on the assumption of parton charge symmetry. Our model calculations suggest charge symmetry violation [CSV] for parton valence distributions of a few percent. Precision measurements of structure functions in ...
متن کاملThe Validity of Charge Symmetry for Parton Distributions
Recent measurements of the Gottfried Sum Rule have focused attention on the possibility of substantial breaking of flavor symmetry in sea quark distributions of the proton. This has been confirmed by by pp and pD Drell-Yan processes measured at FNAL. The theoretical models used to infer flavor symmetry breaking rely on the assumption that parton distributions are charge symmetric; it is conceiv...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2005
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.72.036010