The Higgs Decay Width in Multi-Scalar Doublet Models
arXiv:0709.1505 · doi:10.1103/PhysRevD.77.013006
Abstract
We show that there are regions of parameter space in multi-scalar doublet models where, in the first few hundred inverse femtobarns of data, the new charged and neutral scalars are not directly observable at the LHC and yet the Higgs decay rate to b bbar is changed significantly from its standard model value. For a light Higgs with a mass less than 140 GeV, this can cause a large change in the number of two photon and tau tau Higgs decay events expected at the LHC compared to the minimal standard model. In the models we consider, the principle of minimal flavor violation is used to suppress flavor changing neutral currents. This paper emphasizes the importance of measuring the properties of the Higgs boson at the LHC; for a range of parameters the model considered has new physics at the TeV scale that is invisible, in the first few hundred inverse femtobarns of integrated luminosity at the LHC, except indirectly through the measurement of Higgs boson properties.
18 pages, 3 figures V2: refs added
References in corpus (32)
- The Cosmological Parameters 2006
- Big-Bang nucleosynthesis (Particle Data Group mini-review)
- Minimal Flavour Violation: an effective field theory approach
- Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions
- Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
- Higgs Radiation off Top Quarks at the Tevatron and the LHC
- NLO QCD corrections to t anti-t H production in hadron collisions
- Phenomenology of Two Higgs Doublet Models with Flavor Changing Neutral Currents
- Minimal Flavor Violation in the Lepton Sector
- NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
- Observing the Dark Scalar Doublet and its Impact on the Standard-Model Higgs Boson at Colliders
- Higgs Radiation off Bottom Quarks at the Tevatron and the LHC
- Exclusive Higgs Boson Production with bottom quarks at Hadron Colliders
- An inclusive measurement of the photon energy spectrum in b->s gamma decays
- A Higgs-Higgs bound state due to New Physics at a TeV
- B->V gamma Beyond QCD Factorisation
- Next-to-Leading Order Results for t-tbar-h Production at the Tevatron
- Global analysis of inclusive B decays
- Associated Top Quark-Higgs Boson Production at the LHC
- Flavor changing interactions mediated by scalars at the weak scale
- Flavour Changing Neutral Currents, Weak-Scale Scalars and Rare Top Decays
- Measurements of the B -> X_s gamma Branching Fraction and Photon Spectrum from a Sum of Exclusive Final States
- Modifications to the Properties of the Higgs Boson
- Invisible Higgs Boson Decay into Massive Neutrinos of 4th Generation
- Another Look at Minimal Lepton Flavour Violation, l_i -> l_j gamma, Leptogenesis, and the Ratio M_nu/ Lambda_LFV
- Higgs Production in Association with Bottom Quarks at Hadron Colliders
- Broadening the Higgs Boson with Right-Handed Neutrinos and a Higher Dimension Operator at the Electroweak Scale
- Measurement of the Branching Fraction and Photon Energy Moments of B->X_s gamma and A_{cp}(B->X_(s+d) gamma)
- Hiding the Higgs at the LHC
- An estimate of the B-->K*gamma form factor
- Fermionic Effective Operators and Higgs Production at a Linear Collider
- A Search for Supersymmetric Higgs Bosons in the Di-Tau Decay Mode in Proton Anti-Proton Collisions at sqrt(s)=1.8 TeV
Cited by in corpus (22)
- Theory and phenomenology of two-Higgs-doublet models
- The Hunt for New Physics at the Large Hadron Collider
- Enhanced di-Higgs Production through Light Colored Scalars
- A Minimal Flavor Violating 2HDM at the LHC
- Standard Model couplings and collider signatures of a light scalar
- The Private Higgs
- Type II seesaw mechanism for Higgs doublets and the scale of new physics
- Light Octet Scalars, a Heavy Higgs and Minimal Flavour Violation
- Physical parameters and basis transformations in the Two-Higgs-Doublet model
- Supersymmetric Higgs Bosons and Beyond
- Electroweak Baryogenesis with a Pseudo-Goldstone Higgs
- On theories of enhanced CP violation in B_s,d meson mixing
- 2 Higgs or not 2 Higgs
- Partially Strong WW Scattering
- Two Higgs Models for Large Tan Beta and Heavy Second Higgs
- Neutrino Masses in a Two Higgs Doublet Model with a U(1) Gauge Symmetry
- Lone Higgs at the LHC
- The large CP phase in B(s) - anti-B(s) mixing and Unparticle Physics
- Top quark induced vacuum misalignment in little higgs models
- h-> mu^+ mu^- via tth Production at the LHC
- Simple two Higgs doublet model
- A lepton model with nearly Cobimaximal mixing