Flavor Changing Scalar Interactions

Abstract

The smallness of fermion masses and mixing angles has recently been been attributed to approximate global $U(1)$ symmetries, one for each fermion type. The parameters associated with these symmetry breakings are estimated here directly from observed masses and mixing angles. It turns out that although flavor changing reaction rates may be acceptably small in electroweak theories with several scalar doublets without imposing any special symmetries on the scalars themselves, such theories generically yield too much CP violation in the neutral kaon mass matrix. Hence in these theories CP must also be a good approximate symmetry. Such models provide an alternative mechanism for CP violation and have various interesting phenomenological features.

18 pages. UTTG-22-92; LBL 33016; UCB 92/36

References in corpus (3)

• Flavor changing interactions mediated by scalars at the weak scale
• $D$-$\bar{D}$ Mixing in Heavy Quark Effective Field Theory
• Testing the Standard Model and Schemes for Quark Mass Matrices with CP Asymmetries in B Decays

Cited by in corpus (134)

• Theory and phenomenology of two-Higgs-doublet models
• Phenomenology of Two Higgs Doublet Models with Flavor Changing Neutral Currents
• Dynamical Left-Right Symmetry Breaking
• Flavor Symmetries and The Problem of Squark Degeneracy
• Rare Charm Decays in the Standard Model and Beyond
• Implications of D^0-\bar D^0 Mixing for New Physics
• $R(D^{(\ast )})$ in a general two Higgs doublet model
• New Method for Detecting Charged (Pseudo-)Scalars at Colliders
• Flavor Symmetries and the Description of Flavor Mixing
• Probing flavor changing top-charm-scalar interactions in $e^{+}{e}^{-}$ collisions
• Top-quark rare decay $t\to ch$ in R-parity-violating SUSY
• The Standard Model on a D-brane
• Relating the scalar flavour-changing neutral couplings to the CKM matrix
• QCD Corrections to Scalar Production via Heavy Quark Fusion at Hadron Colliders
• Sources of CP Violation in the Two-Higgs Doublet Model
• Top-Quark Decay Via Flavor-Changing Neutral Currents at Hadron Colliders
• Status of the semileptonic $B$ decays and muon g-2 in general 2HDMs with right-handed neutrinos
• New Physics in CP Asymmetries and Rare B Decays
• Minimal Flavour Violation and Multi-Higgs Models
• On the Parametrization of Flavor Mixing in the Standard Model
• τ- μFlavor Violation as a Probe of the Scale of New Physics
• (S)quark Masses and Non-Abelian Horizontal Symmetries
• First limit on inclusive $B\to X_s\nu \bar{\nu }$ decay and constraints on new physics
• Top-Charm Associated Production in High Energy $e^{+}{e}^{-}$ Collisions
• Single Top Quark Production via FCNC Couplings at Hadron Colliders
• Search for Single Top Production at LEP
• CP Violation in the Decay $b\to s\gamma$ in the Two-Higgs Doublet Model
• $h\to \mu \tau$ at Hadron Colliders
• Direct Top Quark Production at Hadron Colliders as a Probe of New Physics
• Flavor Changing Neutral Scalar Currents at ${\mu }^{+}{\mu }^{-}$ Colliders
• Phase Effect of A General Two-Higgs-Doublet Model in $b\to s\gamma$
• Natural fermion mass hierarchy and new signals for the Higgs boson
• Searching for $t\to cg$ at the Fermilab Tevatron
• The Role of CP violation in D0 anti-D0 Mixing
• Top-Quark Decay Via the Anomalous Coupling $\bar{t}c\gamma$ at Hadron Colliders
• Flavor at the TeV Scale with Extra Dimensions
• New Physics effects in the flavor-changing neutral couplings of the Top quark
• Search for the lepton flavor violating decay A^0/H^0 --> tau^{+/-} mu^{+/-} at hadron colliders
• Scalar sector properties of two-Higgs-doublet models with a global U(1) symmetry
• FCNC in left-right symmetric theories and constraints on the right-handed scale
• Higgs-mediated flavor-changing neutral currents in the general framework with two Higgs doublets -- an RGE analysis
• Probing the Flavor-Changing tc vertex via Tree-Level Processes: e+e- -> t bar-c nu_e bar-nu_e, t bar-c e+ e- and t -> c W+ W-
• Two-Higgs Leptonic Minimal Flavour Violation
• Electron Electric Dipole Moment from CP Violation in the Charged Higgs Sector
• A search for D0-D0bar mixing and doubly-Cabibbo-suppressed decays of the D0 in hadronic final states
• Abelian symmetries in the two-Higgs-doublet model with fermions
• Direct CP violation in radiative b decays in and beyond the Standard Model
• Exclusive B -> pi e^+ e^- and B -> rho e^+ e^-
• Flavor Violating Higgs signals in the Texturized Two-Higgs Doublet Model (2HDM-Tx)
• Searching for new physics in $b\to ss\bar{d}$ decays
• Implications of a W^+W^- (ZZ) - Higgs - t c-bar$ Interaction for e^+e^- -> t c-bar ν_e ν_e-bar, t c-bar e^+ e^-, t c-bar Z and for t -> cW^+W^-, cZZ in a Two Higgs Doublet Model
• Rare Decay of the Top t->c l lbar and Single Top Production at International Linear Collider
• Spontaneous CP violation in the left-right model and the kaon system
• Effective Lagrangian approach to Higgs-mediated FCNC top quark decays
• Probing Topcolor-Assisted Technicolor from Like-sign Top Pair Production at LHC
• Fermion Masses without Higgs: A Supersymmetric Technicolor Model
• $R_b$ and $R_c$ in the Two Higgs Doublet Model with Flavor Changing Neutral Currents
• Flavour changing strong interaction effects on top quark physics at the LHC
• Lepton polarization and CP-violating effects in "B -> K^* tau^+ tau^-" decay in standard and two Higgs doublet models
• FCNC top quark production via anomalous tqV couplings beyond leading order
• τ^- \to μ^- π^0(η,η') Decays in New Physics Scenarios beyond the Standard Model
• Spontaneous CP violation in supersymmetric models with four higgs doublets
• Probing Flavor Changing Neutral Higgs Couplings at LHC
• Flavour Conservation in Two Higgs Doublet Models
• Flavor Changing Neutral Higgs Couplings and Top-Charm Production at Next Linear Collider
• $D^0-{\bar{D}}^0$ Mixing in the Presence of Isosinglet Quarks
• Strong flavour changing effective operator contributions to single top quark production
• Novel CP-violating Effects in B decays from Charged-Higgs in a Two-Higgs Doublet Model for the Top Quark
• T Violating Muon Polarization in $K^{+}\to {\mu }^{+}\nu \gamma$
• CP violation in $B\to \Phi K_S$ in a model III 2HDM
• Muon anomalous magnetic moment in the standard model with two Higgs doublets
• Top Quark FCNC Decay to 125GeV Higgs boson in the Littlest Higgs Model with T-parity
• Relating B_s Mixing and B_s -> mu+mu- with New Physics
• Scalar Mediated FCNC at the First Muon Collider
• SU(3) Gauge Family Symmetry and Prediction for the Lepton-Flavor Mixing and Neutrino Masses with Maximal Spontaneous CP Violation
• B^0-\bar{B}^0 mixing and B \to X_s γdecay in the third type 2HDM: effects of NLO QCD contributions
• The Anomalous Magnetic Moment of the Muon and Higgs-Mediated Flavor Changing Neutral Currents
• Exclusive Lambda_b -> Lambda l^+ l^- decay in two Higgs doublet model
• CP violating polarizations in semileptonic heavy meson decays
• Gauge-singlet dark matter in a left-right symmetric model with spontaneous CP violation
• $F^0-{\bar{F}}^0$ Mixing and CP Violation in the General Two Higgs Doublet Model
• Complex CKM matrix, spontaneous CP violation and generalized $\mu$-$\tau$ symmetry
• Charmless hadronic decays $B\to PP,PV,VV$ and new physics effects in the general two-Higgs doublet models
• The Effective Lagrangian of the Two Higgs Doublet Model
• Like Sign Top Quark Pair Production at Linear Colliders
• The $B->X_{s}gammagamma$ decay in the standard model and the general two-Higgs-doublet model
• CP violation in $B_{d,s}\to l^{+}{l}^{-}$ in the model III 2HDM
• Texture of Yukawa coupling matrices in general two-Higgs-doublet model
• From axion quality and naturalness problems to a high-quality ${\mathbb{Z}}_N$ QCD relaxion
• Contributions from dimension six strong flavor changing operators to top anti-top, top plus gauge boson, and top plus Higgs boson production at the LHC
• Phenomenological aspects of the exotic $T$ quark in 331 models
• Minimal Supersymmetric Scenarios for Spontaneous CP Violation
• CP violation in multi-Higgs supersymmetric models
• The Potential for Neutrino Physics at Muon Colliders and Dedicated High Current Muon Storage Rings
• Branching ratios and CP-violating asymmetries of $B_s\to h_1{h}_2$ decays in the general two-Higgs doublet models
• Two Higgs Bi-doublet Left-Right Model With Spontaneous P and CP Violation
• String-Inspired Triplet See-Saw from Diagonal Embedding of SU(2)_L in SU(2)_A x SU(2)_B
• Probing New Physics From CP Violation in Radiative B Decays
• Naturally Small $x_s$?
• Quark mixings and flavor changing interactions with singlet quarks
• The exclusive $B\to \pi {\ell }^{+}{\ell }^{-}$ and $B\to \rho {\ell }^{+}{\ell }^{-}$ decays in the general two Higgs doublet model
• Charm multiplicity and the branching ratios of inclusive charmless b quark decays in the general two-Higgs-doublet models
• Exclusive $B\to PV$ Decays and CP Violation in the General two-Higgs-doublet Model
• Top-Charm flavor changing contributions to the effective $bsZ$ vertex
• Identify Charged Higgs Boson in $W^{\pm }{H}^{\mp }$ Associated Production at LHC
• Higgs induced FCNC as a source of new physics in $b\to s$ transitions
• CP violation in a multi-Higgs doublet model with flavor changing neutral current
• Gluon penguin enhancements to inclusive charmless decays of b quark in the 2HDM with flavor changing couplings
• CP asymmetry in $B\to \varphi K_S$ in a general two-Higgs-doublet model with fourth-generation quarks
• Low-energy effects of Charged Higgs with general Yukawa couplings
• Accumulating Hints for Flavour Violating Higgses at the Electroweak Scale
• Flavor-changing interactions with singlet quarks and their implications for the LHC
• $W^{\pm }{H}^{\mp }$ associated production at LHC in the general 2HDM with Spontaneous CP Violation
• Gauge Theory Model of the Neutrino and New Physics Beyond the Standard Model
• Minimal flavour violations and tree level FCNC
• Same-sign top pair plus $W$ production in flavor changing vector and scalar models
• CP-Violating Observables in Tagged $D^0$--${\bar{D}}^0$ Decays
• Lepton Flavor Violating $\tau$ Decays in Two Higgs Doublet Model III
• Two Higgs Bi-doublet Model With Spontaneous P and CP Violation and Decoupling Limit to Two Higgs Doublet Model
• Higgs and neutrino sector, EDM and epsilon_K in a spontaneously CP and R-parity breaking supersymmetric model
• Leptonic CP Violation and Wolfenstein Parametrization for Lepton Mixing
• Fermion number conservation and two Higgs doublet models without tree level flavour changing neutral currents
• Search for new physics from $B\to \pi \varphi$
• Neutral Higgs production on LHC in the two-Higgs-doublet model with spontaneous $CP$ violation
• Rare three-body decay t -> c h gamma in the standard model and the two-Higgs doublet model
• Exploring the Quark Flavour Puzzle within the 3 Higgs Model
• Implications for new physics from ${\bar{B}}^0\to {\pi }^0{\pi }^0$ and ${\bar{B}}^0\to {\bar{K}}^0{K}^0$
• New Physics in the Flavour Sector in the presence of Flavour Changing Neutral Currents
• The mass ratios parametrization
• Charm2000: A >10^8-charm experiment for the turn of the millennium
• Discovering Chiral Higgsinos at the LHC
• Spontaneous Family Symmetry Breaking And Fermion Mixing
• Implications of CP violating 2HDM in B physics
• Relating B_s Mixing and B_s->mu+mu- with New Physics - An Update