On the 750 GeV di-photon excess

Abstract

We explore several perturbative scenarios in which the di-photon excess at 750 GeV can potentially be explained: a scalar singlet, a two Higgs doublet model (2HDM), a 2HDM with an extra singlet, and the decays of heavier resonances, both vector and scalar. We draw the following conclusions: (i) due to gauge invariance a 750 GeV scalar singlet can accommodate the observed excess more readily than a scalar SU(2)_L doublet; (ii) scalar singlet production via gluon fusion is one option, however, vector boson fusion can also provide a large enough rate, (iii) 2HDMs with an extra singlet and no extra fermions can only give a signal in a severely tuned region of the parameter space; (iv) decays of heavier resonances can give a large enough di-photon signal at 750 GeV, while simultaneously explaining the absence of a signal at 8 TeV.

14 pages, 7 figures, version matching published version

References in corpus (46)

• Parton distributions for the LHC
• 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?
• Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Scenarii for interpretations of the LHC diphoton excess: two Higgs doublets and vector-like quarks and leptons
• Phenomenology of a 750 GeV Singlet
• Composite Models for the 750 GeV Diphoton Excess
• On the Interpretation of a Possible $\sim 750$ GeV Particle Decaying into $\gamma \gamma$
• Rays of light from the LHC
• 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
• 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
• Can the new resonance at LHC be a CP-Odd Higgs boson?
• Tricking Landau-Yang: How to obtain the diphoton excess from a vector resonance
• Quirky Explanations for the Diphoton Excess
• 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
• 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
• The 750 GeV Diphoton Excess May Not Imply a 750 GeV Resonance
• 750 GeV Resonance in the Dark Left-Right Model
• Could the width of the diphoton anomaly signal a three-body decay ?
• Trinification can explain the di-photon and di-boson LHC anomalies
• Effective interpretations of a diphoton excess
• Scalar Explanation of Diphoton Excess at LHC
• A Simple $U(1)$ Gauge Theory Explanation of the Diphoton Excess
• 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

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• Dark Matter through the Higgs portal
• Quark Seesaw, Vectorlike Fermions and Diphoton Excess
• The 750 GeV $S$-cion: Where else should we look for it?
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• Electroweak Vacuum Stability and Diphoton Excess at 750 GeV
• Di-photon Excess Explained by a Resonant Sneutrino in R-parity Violating Supersymmetry
• LHC diphoton excess from colorful resonances
• 750 GeV Diphoton Resonance from Singlets in an Exceptional Supersymmetric Standard Model
• Perturbativity, vacuum stability and inflation in the light of 750 GeV diphoton excess
• LHC 750 GeV Diphoton excess in a radiative seesaw model
• The 750 GeV diphoton LHC excess and Extra Z's in Heterotic-String Derived Models
• Digamma, what next?
• Realizing Dark Matter and Higgs Inflation in Light of LHC Diphoton Excess
• Diphoton Excess at 750 GeV in leptophobic U(1)${}^{\prime }$ model inspired by $E_6$ GUT
• A Promising Interpretation of Diphoton Resonance at 750 GeV
• Interpreting the 750 GeV digamma excess: a review
• 750 GeV Diphoton excess from $E_6$ in F-theory GUTs
• Simplified Models for Higgs Physics: Singlet Scalar and Vector-like Quark Phenomenology
• Higgs precision study of the 750 GeV diphoton resonance and the 125 GeV standard model Higgs boson with Higgs-singlet mixing
• Diphoton Excess in Consistent Supersymmetric SU(5) Models with Vector-like Particles
• 750 GeV Resonance in the Gauged $U(1{)}^{\prime }$-Extended MSSM
• Vector-Like Exotics in F-Theory and 750 GeV Diphotons
• NMSSM extended with vectorlike particles and the diphoton excess at the LHC
• 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
• Interpreting The 750 GeV Diphoton Excess Within Topflavor Seesaw Model
• Implications of a High-Mass Diphoton Resonance for Heavy Quark Searches
• 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
• Comments on the diphoton excess: critical reappraisal of effective field theory interpretations
• Models of LHC Diphoton Excesses Valid up to the Planck scale
• Note on Spin-2 Particle Interpretation of the 750~GeV Diphoton Excess
• Exploiting jet binning to identify the initial state of high-mass resonances
• Searching for signatures of $E_6$
• Di-Photon excess in the 2HDM: hasting towards the instability and the non-perturbative regime
• Interpreting 750 GeV Diphoton Excess in Plain NMSSM
• The breaking of the $SU(2{)}_L\times U(1{)}_Y$ symmetry: The 750 GeV resonance at the LHC and perturbative unitarity
• Systematic Study of Diphoton Resonance at 750 GeV from Sgoldstino
• The $750$ GeV Diphoton Excesses in a Realistic D-brane Model
• Diphoton excess at 750 GeV: gluon-gluon fusion or quark-antiquark annihilation?
• The 750GeV diphoton excess: who introduces it?
• Diphotons from an Electroweak Triplet-Singlet
• A Flippon Related Singlet at the LHC II
• Asymmetric Dark Matter Models and the LHC Diphoton Excess
• Photo-production of a 750 GeV di-photon resonance mediated by Kaluza-Klein leptons in the loop
• LHC signatures of neutral pseudo-Goldstone boson in the E6CHM
• Diphoton excess and VV-scattering
• 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
• 750 GeV Diphotons from Supersymmetry with Dirac Gauginos
• Minimal Dilaton Model and the Diphoton Excess
• Can the 750 GeV diphoton LHC excess be due to a radion-dominated state?
• From the 750 GeV Diphoton Resonance to Multilepton Excesses
• Radiative neutrino models in light of diphoton signals
• Implications of the 750 GeV gamma-gamma Resonance as a Case Study for the International Linear Collider
• Boosted scalar confronting 750 GeV di-photon excess
• Astrophysical Constraints on Singlet Scalars at LHC
• Enhanced color gauge invariance and a new di-photon state at the LHC
• Chiral heavy fermions in a two Higgs doublet model: 750 GeV resonance or not
• The Observed Diphoton Excess in F-theory Inspired Heterotic String-Derived Model
• Is it $SU(2{)}_{\mathrm{L}}$ or just $U(1{)}_{\mathrm{Y}}$? $750$ GeV di-photon probes of the electroweak nature of new states
• 750 GeV Diphoton Resonance in a Vector-like Extension of Hill Model
• Bounds on supersymmetric effective operators from heavy diphoton searches
• Colour Octet Extension of 2HDM
• Signatures of HyperCharge Axions at Contemporary and Future Colliders
• New energy spectra in neutrino and photon detectors to reveal hidden dark matter signals
• Multi-step production of a diphoton resonance
• Phenomenology of Bulk Scalar Singlets in the Randall Sundrum Model