Charge Symmetry Breaking in Parton Distribution Functions from Lattice QCD

Abstract

By determining the quark momentum fractions of the octet baryons from N_f=2+1 lattice simulations, we are able to predict the degree of charge symmetry violation in the parton distribution functions of the nucleon. This is of importance, not only as a probe of our understanding of the non-perturbative structure of the proton but also because such a violation constrains the accuracy of global fits to parton distribution functions and hence the accuracy with which, for example, cross sections at the LHC can be predicted. A violation of charge symmetry may also be critical in cases where symmetries are used to guide the search for physics beyond the Standard Model.

4 pages, 3 figures, 1 table. Minor changes. Published version

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Cited by in corpus (15)

• Flavour blindness and patterns of flavour symmetry breaking in lattice simulations of up, down and strange quarks
• The Spin Structure of the Nucleon
• The strange and light quark contributions to the nucleon mass from Lattice QCD
• Dispersive estimate of the electromagnetic charge symmetry violation in the octet baryon masses
• Octet Spin Fractions and the Proton Spin Problem
• Flavor structure of the unpolarized and longitudinally-polarized sea-quark distributions in the nucleon
• Charge symmetry breaking from a chiral extrapolation of moments of quark distribution functions
• Linking dynamical heterogeneity to static amorphous order
• Charge Symmetry Breaking in Spin Dependent Parton Distributions and the Bjorken Sum Rule
• Charge symmetry violation: a NNLO study of partonic observables
• Charge Symmetry Violation in the Electromagnetic Form Factors of the Proton
• Dynamic heterogeneity in two-dimensional supercooled liquids: comparison of bond-breaking and bond-orientational correlations
• Chiral expansion of moments of quark distributions
• Electromagnetic contribution to charge symmetry violation in parton distributions
• Progress in resolving charge symmetry violation in nucleon structure