Old and new physics interpretations of the NuTeV anomaly

Details Old and new physics interpretations of the NuTeV anomaly Old and new physics interpretations of the NuTeV anomaly

2001-12-21

arxiv.org/abs/hep-ph/0112302v4

JHEP 0202:037,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 4 figures. Final version; note added about oscillations. Version 4: note added at page 20 (not present in the publis

Scientific paper

10.1088/1126-6708/2002/02/037

We discuss whether the NuTeV anomaly can be explained, compatibly with all other data, by QCD effects (maybe, if the strange sea is asymmetric, or there is a tiny violation of isospin), new physics in propagators or couplings of the vector bosons (not really), loops of supersymmetric particles (no), dimension six operators (yes, for one specific SU(2)-invariant operator), leptoquarks (not in a minimal way), extra U(1) gauge bosons (maybe: an unmixed Z' coupled to B-3L_mu also increases the muon g-2 by about 10^{-9} and gives a `burst' to cosmic rays above the GZK cutoff).

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