Feasibility of light scalars in a class of two-Higgs-doublet models and their decay signatures

Abstract

We demonstrate that light charged and extra neutral scalars in the (100-200) GeV mass range pass the potentially dangerous flavor constraints in a particular class of two-Higgs-doublet model which has appropriately suppressed flavor-changing neutral currents at tree level. We study their decay branching ratios into various fermionic final states and comment on the possibility of their detection in the collider experiments. We also remark on how their trademark decay signatures can be used to discriminate them from the light nonstandard scalars predicted in other two-Higgs-doublet models.

Minor typos in Appendices settled, matches published version

References in corpus (7)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• B_{s,d} -> l+ l- in the Standard Model with Reduced Theoretical Uncertainty
• Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
• NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
• Branching Ratio Measurements of $B_s$ Decays
• Phenomenological discriminations of the Yukawa interactions in two-Higgs doublet models with $Z_2$ symmetry

Cited by in corpus (27)

• Family non-universal Z' models with protected flavor-changing interactions
• Flavour Changing Higgs Couplings in a Class of Two Higgs Doublet Models
• Scalar sector of Two-Higgs-Doublet models: A mini-review
• An invisible axion model with controlled FCNCs at tree level
• What if the Masses of the First Two Quark Families are not Generated by the Standard Higgs?
• Complementarity in direct searches for additional Higgs bosons at the LHC and the International Linear Collider
• Alignment limit in three Higgs-doublet models
• Low-mass fermiophobic charged Higgs phenomenology in two-Higgs-doublet models
• $B_s^0-{\bar{B}}_s^0$ mixing within minimal flavor-violating two-Higgs-doublet models
• A class of invisible axion models with FCNCs at tree level
• Controlled Flavour Changing Neutral Couplings in Two Higgs Doublet Models
• Two-Higgs doublet models confront the naturalness problem
• Alignment, reverse alignment, and wrong sign Yukawa couplings in two Higgs doublet models
• Vacuum Induced CP Violation Generating a Complex CKM Matrix with Controlled Scalar FCNC
• Symmetry Constrained Two Higgs Doublet Models
• Probing the Higgs boson through Yukawa force
• On the scalar potential of two-Higgs doublet models
• The accidental Higgs
• $K^0-{\bar{K}}^0$ mixing in the minimal flavor-violating two-Higgs-doublet models
• Extending Trinity to the Scalar Sector through Discrete Flavoured Symmetries
• Implications Of The Higgs Discovery On Physics Beyond The Standard Model
• Spontaneous symmetry breaking in three-Higgs-doublet $S_3$-symmetric models
• The 30 GeV Dimuon Excess at ALEPH
• Crossed two Higgs-doublet models: reduction of Yukawa parameters in the low-scale limit of left-right symmetry and other avatars
• A three Higgs doublet model with symmetry-suppressed flavour changing neutral currents
• Implication of Higgs mediated Flavour Changing Neutral Currents with Minimal Flavour Violation
• Constraints on a Class of Two-Higgs Doublet Models with tree level FCNC