Fermion number violation in heavy fermion decay

Details Fermion number violation in heavy fermion decay Fermion number violation in heavy fermion decay

1995-12-12

arxiv.org/abs/hep-ph/9512282v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Tex, 16 pages, four figures added in ps file

Scientific paper

The presence of a heavy fermion doublet of fourth generation in the standard model would lead to a anomalous decay with fermion number non-conservation. The anomalous decay path in the background of the electroweak instanton is demonstrated by numerical calculation. If the mass of fermion exceeds the critical value $m_f^{\rm cr}$=9.2 TeV (for $M_H=M_W$), it is shown that there exists the rapid anomalous decay of the heavy fermion in semi-classical approximation. The dependence of the critical fermion mass on the Higgs mass is also presented.

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