Window on Higgs Boson: Fourth Generation $b^{\prime }$ Decays Revisited

Abstract

Direct and indirect searches of the Higgs boson suggest that 113 GeV $\lesssim m_H\lesssim$ 170 GeV is likely. With the LEP era over and the Tevatron Run II search via $p\bar{p}\to WH+X$ arduous, we revisit a case where $WH$ or $ZH+$ jets could arise via strong $b^{\prime }{\bar{b}}^{\prime }$ pair production. In contrast to 10 years ago, the tight electroweak constraint on $t^{\prime }$--$b^{\prime }$ (hence $t^{\prime }$--$t$) splitting reduces FCNC $b^{\prime }\to bZ$, $bH$ rates, making $b^{\prime }\to cW$ naturally competitive. Such a "cocktail solution" is precisely the mix that could evade the CDF search for $b^{\prime }\to bZ$, and the $b^{\prime }$ may well be lurking below the top. In light of the Higgs program, this two-in-one strategy should be pursued.

4 pages, RevTex, 4 eps figures, One more figure, version to be published in Phys. Rev. D

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