期刊
PHYSICAL REVIEW D
卷 83, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.83.051501
关键词
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资金
- DFG [SFB/TR 55]
- EU [238353, 227431]
- STFC [ST/F009658/1]
- University of Adelaide
- Australian Research Council [FL0992247]
- Science and Technology Facilities Council [ST/F009658/1] Funding Source: researchfish
- STFC [ST/F009658/1] Funding Source: UKRI
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 nonperturbative 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.
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