Top-phobic heavy Higgs boson as the 750 GeV diphoton resonance

Abstract

A hint of a new resonance at a mass of 750\,GeV has been observed in the diphoton channel of LHC Run 2 at $\sqrt{s}=13$ TeV. The signal rate is too large to interpret it as a new Higgs boson in the context of weakly-coupled renormalizable models. One way is to reduce its total decay rate, which is possible if the CP-even heavy Higgs boson $H^0$ in the aligned two Higgs doublet model becomes top-phobic. To ensure sufficient gluon fusion production, we introduce vector-like quarks (VLQ). The Higgs precision data as well as the exclusion limits from no excesses in other 8 TeV LHC searches of $Z\gamma$, $b\bar{b}$, ${\tau }^{+}{\tau }^{-}$, and $jj$ channels are simultaneously included. In Type I, top-phobic $H^0$ cannot explain the 750\,GeV diphoton signal and the Higgs precision data simultaneously since the universal Yukawa couplings of the up-type and down-type VLQs always make more contribution to $h^0$ than to $H^0$. In Type II, small Yukawa coupling of the up-type VLQ but sizable Yukawa coupling for the down-type VLQ is shown to explain the signal while satisfying other LHC exclusion limits.

Errors in the Type I calculation are corrected, and references are added

References in corpus (80)

• Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV
• Observation of the diphoton decay of the Higgs boson and measurement of its properties
• Measurement of Higgs boson production in the diphoton decay channel in $pp$ collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector
• Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• What is the gamma gamma resonance at 750 GeV?
• Phenomenology of a 750 GeV Singlet
• Composite Models for the 750 GeV Diphoton Excess
• Scenarii for interpretations of the LHC diphoton excess: two Higgs doublets and vector-like quarks and leptons
• On the Interpretation of a Possible $\sim 750$ GeV Particle Decaying into $\gamma \gamma$
• Rays of light from the LHC
• Search for neutral Higgs bosons of the minimal supersymmetric standard model in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models. Part 2: $m_H=125$ GeV
• The LHC diphoton resonance and dark matter
• The QCD Axion from Aligned Axions and Diphoton Excess
• Di-photon excess illuminates Dark Matter
• Scattering Light by Light at 750 GeV at the LHC
• The Minimal Model of a Diphoton Resonance: Production without Gluon Couplings
• A pseudoscalar decaying to photon pairs in the early LHC Run 2 data
• Footprints of New Strong Dynamics via Anomaly and the 750 GeV Diphoton
• Singlet Scalar Resonances and the Diphoton Excess
• First interpretation of the 750 GeV di-photon resonance at the LHC
• Diphoton Signatures from Heavy Axion Decays at the CERN Large Hadron Collider
• The diphoton resonance as a gravity mediator of dark matter
• Knocking on New Physics' door with a Scalar Resonance
• The 750 GeV diphoton excess from the goldstino superpartner
• A 750 GeV Dark Pion: Cousin of a Dark G-parity-odd WIMP
• Di-photon resonance around 750 GeV: shedding light on the theory underneath
• Can the new resonance at LHC be a CP-Odd Higgs boson?
• Quark Seesaw, Vectorlike Fermions and Diphoton Excess
• Tricking Landau-Yang: How to obtain the diphoton excess from a vector resonance
• Quirky Explanations for the Diphoton Excess
• The Minimal Scalar-Stealth Top Interpretation of the Diphoton Excess
• A hidden confining world on the 750 GeV diphoton excess
• A Boost Test of Anomalous Diphoton Resonance at the LHC
• Constraints on and future prospects for Two-Higgs-Doublet Models in light of the LHC Higgs signal
• The 750 GeV $S$-cion: Where else should we look for it?
• Interpretation of the diphoton excess at CMS and ATLAS
• Higgs singlet boson as a diphoton resonance in a vector-like quark model
• Vector Leptoquarks and the 750 GeV Diphoton Resonance at the LHC
• See-Saw Composite Higgses at the LHC: Linking Naturalness to the $750$ GeV Di-Photon Resonance
• Implication of the 750 GeV diphoton resonance on two-Higgs-doublet model and its extensions with Higgs field
• 750 GeV Diphotons from a D3-brane
• A resonance without resonance: scrutinizing the diphoton excess at 750 GeV
• Interpreting the 750 GeV diphoton excess by the singlet extension of the Manohar-Wise Model
• A SUSY Inspired Simplified Model for the 750 GeV Diphoton Excess
• Interpreting the 750 GeV Di-photon Resonance using photon-jets in Hidden-Valley-like models
• Wrong sign and symmetric limits and non-decoupling in 2HDMs
• The 750 GeV Diphoton Excess May Not Imply a 750 GeV Resonance
• 750 GeV Resonance in the Dark Left-Right Model
• Constraining extra-fermion(s) from the Higgs boson data
• Could the width of the diphoton anomaly signal a three-body decay ?
• The 750 GeV diphoton excess at the LHC and dark matter constraints
• Scalar Explanation of Diphoton Excess at LHC
• Light Higgs bosons in Two-Higgs-Doublet Models
• Radion Candidate for the LHC Diphoton Resonance
• Model-independent combination of diphoton constraints at 750 GeV
• Running after Diphoton
• A Simple $U(1)$ Gauge Theory Explanation of the Diphoton Excess
• LHC diphoton 750 GeV resonance as an indication of $SU(3{)}_c\times SU(3{)}_L\times U(1{)}_X$ gauge symmetry
• Electroweak Vacuum Stability and Diphoton Excess at 750 GeV
• LHC diphotons from electroweakly pair-produced composite pseudoscalars
• The LHC 750 GeV diphoton excess in supersymmetry with gauged baryon and lepton numbers
• Interpreting 750 GeV diphoton excess in SU(5) grand unified theory
• 750 GeV diphoton resonance in a top and bottom seesaw model
• Goldstones in Diphotons
• Squarkonium, diquarkonium and octetonium at the LHC and their di-photon decays
• Diphoton excess at 750 GeV: Singlet scalars confront triviality
• The 750 GeV Diphoton excess in a $U(1)$ hidden symmetry model
• The Diphoton Excess, Low Energy Theorem and the 331 Model
• LHC diphoton excess from colorful resonances
• High-scale validity of a two-Higgs doublet scenario: a study including LHC data
• Two Higgs doublets to explain the excesses $pp\to \gamma \gamma (750\mathrm{GeV})$ and $h\to {\tau }^{\pm }{\mu }^{\mp }$
• 750 GeV Diphotons: Implications for Supersymmetric Unification
• The 750 GeV diphoton resonance as a singlet scalar in an extra dimensional model
• Vector-like top/bottom quark partners and Higgs physics at the LHC
• Dark Matter Theories in the Light of Diphoton Excess
• Complementarity in direct searches for additional Higgs bosons at the LHC and the International Linear Collider
• Fully covering the MSSM Higgs sector at the LHC
• Study of the heavy CP-even Higgs with mass 125 GeV in two-Higgs-doublet models at the LHC and ILC
• Gigantic diphoton rate of heavy Higgs bosons in the aligned two Higgs doublet models with small $\tan \beta$

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• 750 GeV Diphoton Resonance from Singlets in an Exceptional Supersymmetric Standard Model
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• Diphoton Excess at 750 GeV in leptophobic U(1)${}^{\prime }$ model inspired by $E_6$ GUT
• Interpreting the 750 GeV digamma excess: a review
• 750 GeV Diphoton excess from $E_6$ in F-theory GUTs
• Diphoton Excess in Consistent Supersymmetric SU(5) Models with Vector-like Particles
• Vector-Like Exotics in F-Theory and 750 GeV Diphotons
• Studying 750 GeV Di-photon Resonance at Photon-Photon Collider
• 750 GeV Di-photon excess at CERN LHC from a dark sector assisted scalar decay
• How Resonance-Continuum Interference Changes 750 GeV Diphoton Excess: Signal Enhancement and Peak Shift
• Confronting a New Three-loop Seesaw Model with the 750 GeV Diphoton Excess
• Diphoton Excess and Running Couplings
• Diphoton excess at 750 GeV and LHC constraints in models with vector-like particles
• Models of LHC Diphoton Excesses Valid up to the Planck scale
• Note on Spin-2 Particle Interpretation of the 750~GeV Diphoton Excess
• Interpreting 750 GeV Diphoton Excess in Plain NMSSM
• Systematic Study of Diphoton Resonance at 750 GeV from Sgoldstino
• The $750$ GeV Diphoton Excesses in a Realistic D-brane Model
• The 750GeV diphoton excess: who introduces it?
• A Flippon Related Singlet at the LHC II
• Asymmetric Dark Matter Models and the LHC Diphoton Excess
• LHC signatures of neutral pseudo-Goldstone boson in the E6CHM
• Topological Structure of the Vacuum, Cosmological Constant and Dark Energy
• Diphoton decay for a 750 GeV scalar boson in a $SU(6)\otimes U(1{)}_X$ model
• Learning from the New Higgs-like Scalar before It Vanishes
• Minimal Dilaton Model and the Diphoton Excess
• From the 750 GeV Diphoton Resonance to Multilepton Excesses
• Boosted scalar confronting 750 GeV di-photon excess
• Hadron Correlations at Energies from GeV to TeV
• Positivity and unitarity constraints on dipole gluon distributions