Large Higgs quartic coupling and (A)DM from extended Bosonic Technicolor

TL;DR

This paper introduces extended bosonic Technicolor models with an $SU(2)_R$ gauge group that achieve vacuum stability and accommodate thermal or asymmetric dark matter, linking dynamical symmetry breaking with dark matter phenomenology.

Contribution

The authors develop novel bosonic Technicolor models with an $SU(2)_R$ gauge group that avoid vacuum stability issues and incorporate dark matter candidates stabilized by technibaryon symmetry.

Findings

Vacuum stability is improved compared to traditional models.

Dark matter relic density can be achieved over a wide mass range.

Leptogenesis can produce the correct dark matter abundance.

Abstract

We propose novel bosonic Technicolor models augmented by an $SU(2)_R$ gauge group and scalar doublet. Dynamical breaking of $SU(2)_R$ induced by technifermion condensation triggers $SU(2)_L$ breaking via a portal coupling. The scale of the new strong interactions is as high as that of composite Higgs models, and the vacuum stability challenge confronting ordinary bosonic Technicolor models is avoided. Thermal or asymmetric dark matter, whose stability is ensured by a $U(1)_{\rm TB}$ technibaryon symmetry, can be realized. In the latter case, the correct relic density can be reproduced for a wide range of dark matter mass via leptogenesis.