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28 March 2024
 
  » arxiv » hep-ph/0301006

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Quark-Lepton Nonuniversality
Xiao-Yuan Li ; Ernest Ma ;
Date 2 Dec 2002
Journal Braz.J.Phys. 34 (2004) 191-193
Subject hep-ph
AffiliationITP Beijing) and Ernest Ma (UC Riverside
AbstractThere 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.
Source arXiv, hep-ph/0301006
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