ar X iv : h ep - p h / 95 11 36 4 v 1 1 7 N ov 1 99 5 TMUP - HEL - 9509
نویسندگان
چکیده
In technicolor theories a large radiative correction to the Zbb vertex generally emerges, because of the large top quark mass and SU (2) L gauge symmetry. The correction can give us an explanation for the deviation of the experimental value of R b ≡ Γ b /Γ h from the standard-model prediction. However, generally the T parameter becomes unacceptably large. We show that in the one-family technicolor model recently proposed by the authors all the S, T , and U parameters can be consistent with the experimental bounds while the observed anomaly of R b is naturally explained.
منابع مشابه
ar X iv : h ep - p h / 95 10 22 8 v 1 5 O ct 1 99 5 TMUP - HEL - 9505 UT - 720 October , 1995 A viable one - family technicolor model
We construct a one-family technicolor model which is consistent with the precision experiments on the electroweak interaction. The Majorana mass of the right-handed techni-neutrino is introduced and the techni-U (1) B−L symmetry is gauged to obtain the correct breaking of the electroweak symmetry. The tree-level kinetic mixing between the techni-U (1) B−L and U (1) Y gauge bosons plays an impor...
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