Quark-Lepton Nonuniversality

Details Quark-Lepton Nonuniversality Quark-Lepton Nonuniversality

2003-01-02

arxiv.org/abs/hep-ph/0301006v1

Braz.J.Phys. 34 (2004) 191-193

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, talk by E. Ma at XXIII ENFPC, Aguas de Lindoia, Brazil (Oct 2002)

Scientific paper

There is new experimental evidence which may be interpreted as a small departure from quark-lepton universality. We propose to understand this as the result of a hierarchy of mass scales in analogy to $m_u, m_d << \Lambda_{QCD}$ for strong isospin. We show $(G_F)^{NC}_{lq} < (G_F)^{CC}_{lq} < (G_F)^{CC}_{ll} < (G_F)^{NC}_{ll}$ in principle, but all are still approximately equal. New physics is predicted at the TeV scale.

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