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Flavor changing neutral currents in supersymmetric multi-Higgs doublet models

N. Escudero, +2 more
- 24 Mar 2006 - 
- Vol. 73, Iss: 5, pp 055015
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TLDR
In this paper, a general discussion of supersymmetric models with three families in the Higgs sector is conducted, and the scalar potential and minima conditions are investigated, deriving the mass matrices for scalar, pseudoscalar, and charged states.
Abstract
We conduct a general discussion of supersymmetric models with three families in the Higgs sector. We analyze the scalar potential and investigate the minima conditions, deriving the mass matrices for the scalar, pseudoscalar, and charged states. Depending on the Yukawa couplings and the Higgs spectrum, the model might allow the occurrence of potentially dangerous flavor-changing neutral currents at the tree level. We compute model-independent contributions for several observables, and as an example we apply this general analysis to a specific model of quark-Higgs interactions, discussing how compatibility with current experimental data constrains the Higgs sector.

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Citations
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Neutrino Physics and Spontaneous CP Violation in the $\mu\nu$SSM

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Neutrino physics and spontaneous CP violation in the μνSSM

TL;DR: The μνSSM provides a solution to the μ problem of the MSSM and explains the origin of neutrino masses by simply using right-handed neutrinos superfields as mentioned in this paper.
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New physics effects in the flavor-changing neutral couplings of the top quark

TL;DR: In this paper, the authors survey the flavor-changing neutral couplings of the top quark predicted by some extensions of the Standard Model: THDM, SUSY, Left-Right symmetric, TC2, 331, and models with extra quarks.
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Next generation Higgs bosons: Theory, constraints, and discovery prospects at the Large Hadron Collider

TL;DR: In this paper, the authors investigated the energy range of the valid perturbation theory of the Higgs boson sector in both a standard model extension and a supersymmetric extension.
Journal ArticleDOI

New Physics effects in the flavor-changing neutral couplings of the Top quark

TL;DR: In this paper, the authors survey the flavor-changing neutral couplings of the top quark predicted by some extensions of the Standard Model: THDM, SUSY, L-R symmetric, TC2, 331, and models with extra quarks.
References
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Natural conservation laws for neutral currents

TL;DR: In this paper, the authors explore the consequences of the assumption that the direct and induced weak neutral currents in an SU(2) gauge theory conserve all quark flavors naturally, i.e., for all values of the parameters of the theory.
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Upper Bounds on Supersymmetric Particle Masses

TL;DR: In this paper, upper bounds on all superparticle masses as functions of the top quark mass are derived based on the "naturalness" criterion, which gives an objective criterion to test (or disprove) the idea of low energy supersymmetry, as implemented in supergravity models.
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D-Branes at Singularities : A Bottom-Up Approach to the String Embedding of the Standard Model

TL;DR: In this paper, a bottom-up approach to the building of particle physics models from string theory is proposed, where the building blocks are Type II D-branes which are combined appropriately to reproduce desirable features of a particle theory model: 1) Chirality ; 2) Standard Model group ; 3) N = 1 orN = 0 supersymmetry ; 4) Three quark-lepton generations.
Journal ArticleDOI

Weak Interaction Mixing in the Six - Quark Theory

TL;DR: In this paper, the weak-interaction mixing angles for the six-quark theory in terms of quark-mass ratios were calculated for the 6 quark theory and the Cabibbo universality of the currents ( u d, ( u ) is violated only to a very small extent, while substantial violations of it are found for the ( c s), ( c d) currents.
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