Negative T from a dynamical left-handed neutrino mass
classification
✦ hep-ph
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dynamicalcontributionleft-handedmassnegativeneutrinobreakingcomment
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We show how a dynamical Majorana mass for a fourth family left-handed neutrino can make a significant negative contribution to the electroweak correction parameter T without making a large contribution to S or U. We also comment on other possible contributions to T in the context of dynamical symmetry breaking.
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