Fourth quark-lepton generation and precision measurements
classification
✦ hep-ph
keywords
constraintsgenerationmassesmeasurementsaboveboundsdemonstratedirect
read the original abstract
Precise measurements of Z-boson parameters and W-boson and t-quark masses put strong constraints on non SU(2) * 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.
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