Hints of New Flavor Physics at LEP?

preprint1994arXivOpen access

A massive gauge boson coupling to the third family but not lighter families mixes with the $Z$ . The $Z$ partial width to $b\overline{b}$ increases, the $τ$ asymmetry parameter increases, the invisible width of the $Z$ decreases, and $α_s(m_Z)$ decreases, all in a manner consistent with present data.

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Hints of New Flavor Physics at LEP?

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