Radiatively generated isospin violations in the nucleon and the NuTeV anomaly.
Predictions of isospin asymmetries of valence and sea distributions are presented which are generated by QED leading Oalpha photon bremsstrahlung effects. Together with isospin violations arising from nonperturbative hadronic sources (such as quark and target mass differences) as well as with even a conservative contribution from a strangeness asymmetry (s not equal to s), the discrepancy between the large NuTeV anomaly result for sin(2Theta(w)) and the world average of other measurements is removed.
Glück
M
M
Institut für Physik, Universität Dortmund, D-44221 Dortmund, Germany.
Jimenez-Delgado
P
P
Reya
E
E