Charge Symmetry Breaking in Parton Distribution Functions from Lattice QCD - INSPIRE

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Charge Symmetry Breaking in Parton Distribution Functions from Lattice QCD

R. Horsley
(
- Edinburgh U.
)
,
Y. Nakamura
(
- Regensburg U. and
- Tsukuba U., CCS
)
,
D. Pleiter
(
- DESY
)
,
P.E.L. Rakow
(
- Liverpool U., Dept. Math.
)
,
G. Schierholz
(
- DESY
)

Dec, 2010

4 pages

Published in:

Phys.Rev.D 83 (2011) 051501

e-Print:

1012.0215 [hep-lat]

DOI:

10.1103/PhysRevD.83.051501

Report number:

ADP-10-23-T719,
DESY-10-219,
EDINBURGH-2010-39,
LTH-893

View in:

ADS Abstract Service

reference search20 citations

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Abstract: (arXiv)

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.

Note:

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

12.38.Gc
11.30.Er
14.20.Dh
parton: distribution function
charge: symmetry breaking
quark: momentum
baryon: octet
flavor: 3
nonperturbative
quark: mass

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