Why the Four SM Families

Abstract

The flavor democracy favors the existence of the nearly degenerate fourth SM family, whereas the fifth SM family is disfavored both by the mass phenomenology and precision tests of the Standard Model. The multi-hundreds GeV fourth family quarks will be copiously produced at the LHC. However, the first indication of the fourth family may come from the Higgs search at the upgraded Tevatron.

Cited by in corpus (6)

• Search for 4th family quarks with the ATLAS detector
• A Search for the Fourth SM Family Fermions and E_6 Quarks at ${\mu }^{+}{\mu }^{-}$ Colliders
• The Effects of Fourth Generation on the double Lepton Polarization in B \rar K \ell^+ \ell^- decay
• Double Lepton Polarization Forward--Backward Asymmetries in B \rar K^\ast \ell^+ \ell^- Decay in the SM4
• Exclusive $B \rar ρ\ell^+ \ell^-$ Decay in the Standard Model with Fourth--Generation
• The Naturalness of the Fourth SM Family