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Topflavor: A Separate SU(2) for the Third Family

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arxiv hep-ph/9602390 v2 pith:IG5M7CG7 submitted 1996-02-25 hep-ph

Topflavor: A Separate SU(2) for the Third Family

classification hep-ph
keywords gaugeheavybosonbosonselectroweakgenerationthirdtimes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider an extended electroweak gauge group: SU(2)$_1 \times$ SU(2)$_2 \times$ U(1)$_Y$ where the first and second generation of fermions couple to SU(2)$_1$ and the third generation couples to SU(2)$_2$. Bounds based on heavy gauge boson searches and current precision electroweak measurements are placed on the masses of the new heavy gauge bosons. In particular we find that the mass of the heavy W boson can not be less than 800 GeV. For some range of the allowed parameter space, these heavy gauge bosons produce observable signals at the Tevatron and LEP-II.

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  1. Search for a new neutral gauge boson produced in association with one or two b jets and decaying into a pair of muons in proton-proton collisions at $\sqrt{s}$ = 13 TeV

    hep-ex 2025-11 accept novelty 4.0

    No Z' boson decaying to muon pairs and produced with b jets appears in 138 fb⁻¹ of CMS data, yielding first 95% CL limits of 0.2–2 fb on σ×B×A×ε across 125–350 GeV.