Two-Higgs-doublet model with a color-triplet scalar: a joint explanation for top quark forward-backward asymmetry and Higgs decay to diphoton

Abstract

The excess of top quark forward-backward asymmetry ($A_{FB}^t$) reported by the Tevatron and the enhancement of the Higgs decay to diphoton observed by the LHC may point to a same origin of new physics. In this note we examined such anomalies in the two-Higgs-doublet model with a color-triplet scalar. We found that under current experimental constraints this model can simultaneously explain both anomalies at $1\sigma$ level. Also, we examined the Higgs decay $h\to Z\gamma$ and displayed its correlation with $h\to \gamma \gamma$. We found that unlike other models, this model predicts a special correlation between $h\to Z\gamma$ and $h\to \gamma \gamma$, i.e., the $Z\gamma$ rate is highly suppressed while the $\gamma \gamma$ rate is enhanced. This behavior may help to distinguish this model in the future high luminosity run of the LHC.

arXiv comment18pages, 4figures, references added

References in corpus (34)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Note on tree-level unitarity in the General Two Higgs Doublet Model
• A minimal set of top anomalous couplings
• Distributions and correlations for top quark pair production and decay at the Tevatron and LHC.
• Current experimental constraints on the lightest Higgs boson mass in the constrained MSSM
• Effective four-fermion operators in top physics: a roadmap
• Light colored scalars from grand unification and the forward-backward asymmetry in top quark pair production
• Enhancement of H to gamma gamma from doubly charged scalars in the Higgs Triplet Model
• Squark Effects on Higgs Boson Production and Decay at the LHC
• The forward-backward asymmetry of top quark production at the Tevatron in warped extra dimensional models
• Constraining heavy colored resonances from top-antitop quark events
• Model independent analysis of the forward-backward asymmetry of top quark production at the Tevatron
• On Models of New Physics for the Tevatron Top A_FB
• Reproducing the Higgs boson data with vector-like quarks
• No like-sign tops at Tevatron: Constraints on extended models and implications for the t tbar asymmetry
• Di-photon Higgs signal at the LHC: a comparative study for different supersymmetric models
• Tevatron Asymmetry of Tops in a W',Z' Model
• Forward-backward asymmetries of the bottom and top quarks in warped extra-dimensional models: LHC predictions from the LEP and Tevatron anomalies
• Forward-backward asymmetry of top quark in unparticle physics
• Enhanced Diphoton Signal of the Higgs Boson and the Muon g-2 in Gauge Mediation Models
• Testing new physics models by top charge asymmetry and polarization at the LHC
• Parametrization dependence and Delta Chi-squared in parton distribution fitting
• Top quark forward-backward asymmetry from SU(N_c) color
• On mass limit for chiral color symmetry $G^{\prime }$-boson from Tevatron data on $t\bar{t}$ production
• Probing topcolor-assisted technicolor from top charge asymmetry and triple-top production at the LHC
• Lone Higgs at the LHC
• Diagnosing the top-quark angular asymmetry using LHC intrinsic charge asymmetries
• Top quark forward-backward asymmetry and W^prime bosons
• A strongly-interacting phase of the Minimal Supersymmetric Model
• New physics contributions to the forward-backward asymmetry at the Tevatron
• Can supersymmetry breaking lead to electroweak symmetry breaking via formation of scalar bound states?
• Bound states and resonances in the scalar sector of the MSSM
• Diquarks from a fourth family

Cited by in corpus (8)

• Lepton flavor violating Higgs decay $h\to \mu \tau$ in the littlest Higgs Model with T-parity
• LHC Constraints on Scalar Diquarks
• Full one-loop electroweak corrections to $e^{+}{e}^{-}\to ZH\gamma$ at a Higgs factory
• LHC diphoton and Z+photon Higgs signals in the Higgs triplet model with Y=0
• Impact of a four-zero Yukawa texture on $h\to \gamma \gamma$ and $\gamma Z$ in the framework of the Two Higgs Doublet Model Type III
• Single Higgs boson production at $e^{+}{e}^{-}$ colliders in the Littlest Higgs Model with T-parity
• $HZ\gamma$ production at $14\mathrm{TeV}$ LHC in next-to-leading order QCD
• Dark matter with exotic mediators: The diquark portal