Radiatively generated isospin violations in the nucleon

Gluck, M.; Jimenez-Delgado, P.; Reya, E.

Radiatively generated isospin violations in the nucleon

Jan, 2005

9 pages

e-Print:

hep-ph/0501169 [hep-ph]

Report number:

DO-TH-2005-01

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Abstract:

Isospin violating valence and sea distributions are evaluated due to QED leading

{\cal{O}}{(\alpha)}

corrections to the standard QCD evolution equations. Unique perturbative predictions are obtained within the radiative parton model, and confirm earlier results. Nonperturbative contributions have been estimated and depend on a single free parameter chosen to be the current quark mass.The relevance of our predictions for extracting

\sin^2 \theta_W

from DIS

\nu(\bar{\nu})N

data (`NuTeV anomaly') is discussed as well.

nucleon: structure function
quark: momentum spectrum
quark: valence
antiquark: sea
isospin: violation
quantum chromodynamics: perturbation theory
quantum electrodynamics: correction
effect: nonperturbative
neutrino nucleon: deep inelastic scattering
antineutrino nucleon: deep inelastic scattering

References(23)

Figures(0)

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