Yukawa textures and charged Higgs boson phenomenology in the type-III two-Higgs-doublet model

Díaz-Cruz, J. Lorenzo; Hernández-Sanchez, J.; Moretti, Stefano; Noriega-Papaqui, R.; Rosado, A.

doi:10.1103/physrevd.79.095025

Cited by 43 publications

(58 citation statements)

References 97 publications

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“…The study indicates that there should exist, not one [55], but several viable sets of hierarchical and Hermitian quark mass matrices, which may provide further possible clues for model building in top-down approaches [67][68][69][70][71][72][73][74]. In this context, it has been recently shown [42] that the texture zeros in the quark sector are essentially stable against the one-loop renormalization-group-evolution of the energy scale required in the top-down investigations of such mass matrices.…”

Section: Discussionmentioning

confidence: 99%

Quark flavor mixings from hierarchical mass matrices

Verma

Zhou

2016

Eur. Phys. J. C

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In this paper, we extend the Fritzsch ansatz of quark mass matrices while retaining their hierarchical structures and show that the main features of the CabibboKobayashi-Maskawa (CKM) matrix V , including |V us | |V cd |, |V cb | |V ts | and |V ub |/|V cb | < |V td |/|V ts |, can be well understood. This agreement is observed especially when the mass matrices have non-vanishing (1, 3) and (3, 1) offdiagonal elements. The phenomenological consequences of these for the allowed texture content and gross structural features of 'hierarchical' quark mass matrices are addressed from a model-independent prospective under the assumption of factorizable phases in these. The approximate and analytical expressions of the CKM matrix elements are derived and a detailed analysis reveals that such structures are in good agreement with the observed quark flavor mixing angles and the CP-violating phase at the 1σ level and call upon a further investigation of the realization of these structures from a top-down prospective.

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Section: Discussionmentioning

confidence: 99%

Quark flavor mixings from hierarchical mass matrices

Verma

Zhou

2016

Eur. Phys. J. C

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“…Herein, we focus instead on the version where the Yukawa couplings depend on the hierarchy of masses. This construct is the one where the mass matrix has a four-zero texture form [43,44] forcing the non-diagonal Yukawa couplings to be proportional to the geometric mean of the two fermion masses involved [45][46][47][48][49]. This matrix is based on the phenomenological observation that the off-diagonal elements have to be small in order to dim the interactions that violate flavor, as innumerable experimental results show.…”

Section: Jhep07(2014)057mentioning

confidence: 99%

“…After spontaneous EWSB, one can derive the fermion mass matrices from eq. (2.5), namely: [47][48][49]. The diagonalisation is performed in the following way: 6) where the χ's are unknown dimensionless parameters of the model.…”

Section: The Higgs-yukawa Sector Of the 2hdm-iiimentioning

confidence: 99%

Impact of a four-zero Yukawa texture on h → γγ and γZ in the framework of the Two Higgs Doublet Model Type III

Cordero-Cid

Hernández-Sanchez²,

Honorato³

et al. 2014

J. High Energ. Phys.

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We study the substantial enhancement, with respect to the corresponding Standard Model rates, that can be obtained for the branching ratios of the decay channels h → γγ and h → γZ within the framework of the Two Higgs Doublet Model Type III, assuming a four-zero Yukawa texture and a general Higgs potential. We show that these processes are very sensitive to the flavor pattern entering the Yukawa texture and to the triple coupling structure of the Higgs potential, both of which impact onto the aforementioned decays. We can accommodate the parameters of the model in such a way to obtain the h → γγ rates reported by the Large Hadron Collider and at the same time we get a h → γZ fraction much larger than in the Standard Model, indeed within experimental reach. We present some scenarios where this phenomenology is realized for spectrum configurations that are consistent with current constraints. We also discuss the possibility of obtaining a light charged Higgs boson compatible with all such measurements, thereby serving the purpose of providing a hallmark signal of the scenario considered.

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“…[11,12,13]) used various combinations of flavor and electroweak observables to constrain the parameter space of the type-II 2HDM, which garnered most of the attention because of its property of having the same Higgs-sector realization as the Minimal Supersymmetric Standard Model (MSSM). Other studies [14,15,16] explored the parameter space of 2HDMs unconstrained by a Z 2 symmetry, with the second Higgs doublet still in the (1, 2) 1/2 representation.…”

Section: Introductionmentioning

confidence: 99%

QCD corrections in two-Higgs-doublet extensions of the standard model with minimal flavor violation

Degrassi¹,

Slavich²

2010

Phys. Rev. D

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We present the QCD corrections to R b and to the ∆B = 1 effective Hamiltonian in models with a second Higgs field that couples to the quarks respecting the criterion of Minimal Flavor Violation, thus belonging either to the (1, 2) 1/2 or to the (8, 2) 1/2 representation of SU (3) × SU (2) × U (1). After the inclusion of the QCD corrections, the prediction for R b becomes practically insensitive to the choice of renormalization scheme for the top mass, which for the type-I and type-II models translates in a more robust lower bound on tan β. The QCD-corrected determinations of R b and BR(B → X s γ) are used to discuss the constraints on the couplings of a (colored) charged Higgs boson to top and bottom quarks.

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Yukawa textures and charged Higgs boson phenomenology in the type-III two-Higgs-doublet model

Cited by 43 publications

References 97 publications

Quark flavor mixings from hierarchical mass matrices

Quark flavor mixings from hierarchical mass matrices

Impact of a four-zero Yukawa texture on h → γγ and γZ in the framework of the Two Higgs Doublet Model Type III

QCD corrections in two-Higgs-doublet extensions of the standard model with minimal flavor violation

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