Implications of Yukawa texture in the charged Higgs boson phenomenology within 2HDM-III

Details Implications of Yukawa texture in the charged Higgs boson phenomenology within 2HDM-III Implications of Yukawa texture in the charged Higgs boson phenomenology within 2HDM-III

2011-05-25

arxiv.org/abs/1105.4951v1

PoS CHARGED2010:042, 2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure, work presented in Third International Workshop on Prospects for Charged Higgs Discovery at Colliders - CHAR

Scientific paper

We discuss the implications of assuming a four-zero Yukawa texture for the properties of the charged Higgs boson within the context of the general 2-Higgs Doublet Model of Type III. We present the charged Higgs boson couplings with heavy quarks and the resulting pattern for its decays, including the decay $H^+ \to W^+ \gamma$ at 1-loop level. The parameters chosen can still avoid the $B \to X_s \gamma$ constraint, the perturbativity and $\rho_0$ bound. Also, we present the constraints of $ B0-\bar{B}0$ mixing and of the radiative corrections to the $Z b \bar{b}$ vertex in the regime small $ \tan \beta$. The production of charged Higgs bosons is also sensitive to the modifications of its couplings, so that we also evaluate the resulting effects on `direct' $c\bar{b}\to H^++c. c.$ and `indirect' $q\bar q,gg\to \bar t b H^++c. c.$ production. Significant scope exists at the Large Hadron Collider for several $H^\pm$ production and decay channels combined to enable one to distinguish between such a model and alternative 2-Higgs doublet scenarios.

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