The 750 GeV diphoton excess at the LHC and dark matter constraints

Abstract

The recent reported 750 GeV diphoton excess at the 13 TeV LHC is explained in the framework of effective field theory assuming the diphoton resonance is a scalar (pseudoscalar) particle. It is found that the large production rate and the broad width of this resonance are hard to simultaneously explain if only visible final states are considered. Therefore an invisible decay channel to dark matter (DM) is strongly favored by the diphoton excess with a broad width, given a large coupling of the new scalar to DM. We set constraints on the parameter space in this scenario using the results from LHC Run 1, DM relic density, and DM direct and indirect detection experiments. We find that the DM searches can exclude a large portion of the parameter regions accounting for the diphoton excess with a broad width.

26 pages, 8 figures. v2,references added. v3, figures updated. v4, discussions and figures added. v5, discussions added

References in corpus (7)

• Big-Bang Nucleosynthesis
• Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
• Di-photon resonance around 750 GeV: shedding light on the theory underneath
• The Minimal Scalar-Stealth Top Interpretation of the Diphoton Excess
• A Boost Test of Anomalous Diphoton Resonance at the LHC
• Implications for dark matter annihilation from the AMS-02 $\bar{p}/p$ ratio

Cited by in corpus (64)

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• Electroweak Vacuum Stability and Diphoton Excess at 750 GeV
• Interpreting the 750 GeV diphoton excess in minimal extensions of Two-Higgs-Doublet models
• A 750 GeV Portal: LHC Phenomenology and Dark Matter Candidates
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• Two Higgs doublets to explain the excesses $pp\to \gamma \gamma (750\mathrm{GeV})$ and $h\to {\tau }^{\pm }{\mu }^{\mp }$
• Implications of the diphoton excess on Left-Right models and gauge unification
• Perturbativity, vacuum stability and inflation in the light of 750 GeV diphoton excess
• The 750 GeV diphoton resonance as a singlet scalar in an extra dimensional model
• LHC 750 GeV Diphoton excess in a radiative seesaw model
• A 750 GeV dark matter messenger at the Galactic Center
• 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
• 750 GeV Diphoton excess from $E_6$ in F-theory GUTs
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• A Promising Interpretation of Diphoton Resonance at 750 GeV
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• Vector-Like Exotics in F-Theory and 750 GeV Diphotons
• NMSSM extended with vectorlike particles and the diphoton excess at the LHC
• 750 GeV Resonance in the Gauged $U(1{)}^{\prime }$-Extended MSSM
• Top-phobic heavy Higgs boson as the 750 GeV diphoton resonance
• Studying 750 GeV Di-photon Resonance at Photon-Photon Collider
• Interpreting The 750 GeV Diphoton Excess Within Topflavor Seesaw Model
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• 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
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• Models of LHC Diphoton Excesses Valid up to the Planck scale
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• Systematic Study of Diphoton Resonance at 750 GeV from Sgoldstino
• Collider Tests of (Composite) Diphoton Resonances
• Di-photon resonance and Dark Matter as heavy pions
• The $750$ GeV Diphoton Excesses in a Realistic D-brane Model
• Di-photon excess at LHC and the gamma ray excess at the Galactic Centre
• The 750GeV diphoton excess: who introduces it?
• Asymmetric Dark Matter Models and the LHC Diphoton Excess
• A Flippon Related Singlet at the LHC II
• LHC signatures of neutral pseudo-Goldstone boson in the E6CHM
• Photo-production of a 750 GeV di-photon resonance mediated by Kaluza-Klein leptons in the loop
• 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
• Confronting dark matter with the diphoton excess from a parent resonance decay
• Boosted scalar confronting 750 GeV di-photon excess
• Cornering diphoton resonance models at the LHC
• Astrophysical Constraints on Singlet Scalars at LHC
• Connecting the LHC diphoton excess to the Galatic center gamma-ray excess
• Bounds on supersymmetric effective operators from heavy diphoton searches
• $\gamma$-ray emission signals in the massive graviton mediated dark matter model
• Noncommutative approach to disclose a Higgs group