The other natural two Higgs doublet model

By J. Mrázek, A. Pomarol, R. Rattazzi, M. Redi, J. Serra, A. Wulzer. 2011

269 citations recorded by the source corpus.

We characterize models where electroweak symmetry breaking is driven by two light Higgs doublets arising as pseudo-Nambu-Goldstone bosons of new dynamics above the weak scale. They represent the simplest natural two Higgs doublet alternative to supersymmetry. We construct their low-energy effective Lagrangian making only few specific assumptions about the strong sector. These concern their global symmetries, their patterns of spontaneous breaking and the sources of explicit breaking. In particular we assume that all the explicit breaking is associated with the couplings of the strong sector to the Standard determined at lowest order by very few free parameters associated to the top sector. Another crucial property of our scenarios is the presence of a discrete symmetry, in addition to custodial SO(4), that controls Model fields, that is gauge and (proto)-Yukawa interactions. Under those assumptions the scalar potential is the T-parameter. That can either be simple CP or a Z(2) that distinguishes the two Higgs doublets. Among various possibilities we study in detail models based on SO(6)/S0(4) x SO(2), focussing on their predictions for the structure of the scalar spectrum and the deviations of their couplings from those of a generic renormalizable two Higgs doublet model. (C) 2011 Elsevier B.V. All rights reserved.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2eb54a5cc29ee033775e84ac1ab4ab690f09b0e3

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Citations in the corpus

On the tuning and the mass of the composite Higgs (2012, background): “This is best understood by promoting g, yL and yR to spurions and noticing that the potential must formally respect the SO(5) symmetry under which both the Higgs and the spurions transform [11, 15].”
What is the γγ resonance at 750 GeV? (2015, background): “It is however often the case that extra PNGB scalars accompany the Higgs [38], with their quantum numbers fixed by group theory.”
A pseudoscalar decaying to photon pairs in the early LHC Run 2 data (2015, background): “4 To control custodial breaking effects that may be induced by the additional scalars it is phenomenologically important to add extra discrete symmetries [36].”
The composite twin Higgs scenario (2015, methodology): “[10] that the number of independent invariants is equal to the number of singlets of the unbroken group H that”
Fermionic UV completions of composite Higgs models (2013, background): “(6)The smallest cosets of this type have been classified in [22].”
Light top partners and precision physics (2013, background): “The condition of vanishing corrections to the ZbLbL coupling implies the relation cHq = −cHq [81, 82, 88].”