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arXiv · 1305.1940

$Hb\bar{b}$ production in Composite Higgs Models

Mikael Chala·Jose Santiago
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Abstract

New vector-like quarks with electric charge 2/3 and -1/3 can be singly produced at hadron colliders through the exchange of a color octet vector resonance in models of strong electroweak symmetry breaking. We show that electroweak symmetry breaking effects can have a significant impact on the decay pattern of these new quarks. In particular, single production of charge -1/3 fermion resonances, mediated by a color octet vector resonance, typically results in an $H b\bar{b}$ final state with a sizeable cross section and very distinctive kinematics. We consider the leading $H\to b\bar{b}$ decay and show that the $4b$ signal can be very efficiently disentangled from the background: heavy octet masses of up to 3 TeV can be tested with the data already collected at the LHC and up to 5 TeV with an integrated luminosity of 100 fb$^{-1}$ at $\sqrt{s}=14$ TeV. We also discuss the kinematical differences between the $Hb\bar{b}$ production in models of strong electroweak symmetry breaking and supersymmetric models and the implications on the phenomenology of non-minimal composite Higgs models.

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Mikael Chala, Jose Santiago. 2013-05-08. $Hb\bar{b}$ production in Composite Higgs Models. https://doi.org/10.1103/physrevd.88.035010

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