Baryonic $Z'$ connection of LEP $R_{b,c}$ data with Tevatron $(W,Z,γ)b\bar b$ events

Details Baryonic $Z'$ connection of LEP $R_{b,c}$ data with Tevatron $(W,Z,γ)b\bar b$ events Baryonic $Z'$ connection of LEP $R_{b,c}$ data with Tevatron $(W,Z,γ)b\bar b$ events

1996-04-11

arxiv.org/abs/hep-ph/9604298v1

Phys.Lett.B381:226-236,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, standard Latex, 8 postscript figures (embedded at end of tex file using "\special" command). Complete postscript ver

Scientific paper

10.1016/0370-2693(96)00554-0

The mixing of a new $Z'$ boson with the $Z$ significantly improves the fit to the LEP precision electroweak data, provided that the $Z'$ couples mainly to quarks. If $M_{Z_2}<200$~GeV, the $s$-channel $Z_2$ production and $(W,Z,\gamma)Z_2$ pair production cross sections at the Tevatron give an excess above QCD of $b\bar b$ and $(W,Z,\gamma)b\bar b$ events, respectively, with invariant mass $m(b\bar b)\approx M_{Z_2}$, which provide viable signals for detection of the $Z_2$. The interference of the $Z_2$ with $\gamma,Z_1$ in $e^+e^-\to \bar bb(\bar cc)$ at LEP\,1.5 energies is correlated with $R_b(R_c)$ and may be observable.

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