An Unusual Two Higgs Doublet Model from Warped Space

Details An Unusual Two Higgs Doublet Model from Warped Space An Unusual Two Higgs Doublet Model from Warped Space

2010-04-17

arxiv.org/abs/1004.2953v1

Phys.Rev.D82:115022,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 9 figures

Scientific paper

10.1103/PhysRevD.82.115022

We study a simple two Higgs doublet model (2HDM) in the Randall-Sundrum scenario, with an IR brane localized Higgs field and a second doublet arising from a $t\bar{t}$ condensate due to strong Kaluza-Klein gluon effects. The effective 2HDM predicts that the ratio of the brane to condensate vacuum expectation values $\tan \beta \sim 3$. It also predicts a standard model like Higgs boson of mass ${\mathcal{O}}(100)$ GeV and a heavier scalar at the scale of the lowest KK gluon mass, which we take to be $M_{KK} \gtrsim 1.5$ TeV. The pseudoscalar and the charged scalars are degenerate in mass at tree-level and are ${\mathcal{O}}(M_{KK})$. There are no tree-level flavor changing neutral currents (FCNC) for the down-type quarks and the standard model results hold there. In contrast, FCNC decays of the t-quark larger than in the SM are expected.

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