Radiatively Generated Isospin Violations in the Nucleon and the NuTeV Anomaly

2005/03/11 by M. Glück, P. Jimenez-Delgado, Pedro Jimenez-Delgado +1 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevlett.95.022002

published as Phys.Rev.Lett. 95 (2005) 022002 · 10 pages, 2 figures

arxiv created 2005/03/11 · openalex publication_date 2005/07/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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.

Citations

• Flavor and charge symmetry in the parton distributions of the nucleon
• Charge symmetry violation corrections to determination of the Weinberg angle in neutrino reactions
• Charge symmetry violating contributions to neutrino reactions
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• Precision Constraints on Extra Fermion Generations