Once more on extra quark-lepton generations and precision measurements

Abstract

Precision measurements of $Z$-boson parameters and $W$-boson and $t$-quark masses put strong constraints on non $SU(2)\times U(1)$ singlet New Physics. We demonstrate that one extra generation passes electroweak constraints even when all new particle masses are well above their direct mass bounds.

Dedicated to L.B. Okun's 80th birthday

References in corpus (1)

• Four Generations and Higgs Physics

Cited by in corpus (25)

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