Neutrino Catalyzed Diphoton Excess

Abstract

In this paper we explain the 750 GeV diphoton resonance observed at the run-2 LHC as a scalar singlet $S$, that plays a key rule in generating tiny but nonzero Majorana neutrino masses. The model contains four electroweak singlets: two leptoquarks, a singly charged scalar and a neutral scalar $S$. Majorana neutrino masses might be generated at the two-loop level as $S$ get nonzero vacuum expectation value. $S$ can be produced at the LHC through the gluon fusion and decays into diphoton at the one-loop level with charged scalars running in the loop. The model fits perfectly with a wide width of the resonance. Constraints on the model are investigated, which shows a negligible mixing between the resonance and the standard model Higgs boson.

15 pages, 4 figures, minor revision, more references added

References in corpus (14)

• Big-Bang Nucleosynthesis
• Constraints on the Self-Interaction Cross-Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657-5
• Updated fit to three neutrino mixing: status of leptonic CP violation
• Neutrino Masses and the LHC: Testing Type II Seesaw
• Systematic classification of two-loop realizations of the Weinberg operator
• Search for pair production of third-generation scalar leptoquarks and top squarks in proton-proton collisions at sqrt(s) = 8 TeV
• Correlative signatures of heavy Majorana neutrinos and doubly-charged Higgs bosons at the Large Hadron Collider
• Multiple seesaw mechanisms of neutrino masses at the TeV scale
• Testing Radiative Neutrino Mass Models at the LHC
• Pure Leptonic Gauge Symmetry, Neutrino Masses and Dark Matter
• A Compromise between Neutrino Masses and Collider Signatures in the Type-II Seesaw Model
• Cascade Seesaw for Tiny Neutrino Mass
• Neutrino Mass Operators of Dimension up to Nine in Two-Higgs-doublet Model
• Neutrino Masses and A TeV Scale Seesaw Mechanism

Cited by in corpus (30)

• Physics of leptoquarks in precision experiments and at particle colliders
• A unified leptoquark model confronted with lepton non-universality in $B$-meson decays
• 750 GeV Diphoton Resonance from Singlets in an Exceptional Supersymmetric Standard Model
• Implications of the diphoton excess on Left-Right models and gauge unification
• Explanation of $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ and muon $g-2$, and implications at the LHC
• LHC 750 GeV Diphoton excess in a radiative seesaw model
• Digamma, what next?
• Diphoton Excess at 750 GeV in leptophobic U(1)${}^{\prime }$ model inspired by $E_6$ GUT
• Realizing Dark Matter and Higgs Inflation in Light of LHC Diphoton Excess
• 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
• 750 GeV Resonance in the Gauged $U(1{)}^{\prime }$-Extended MSSM
• 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
• Diphoton excess at 750 GeV and LHC constraints in models with vector-like particles
• Diphoton Excess and Running Couplings
• Models of LHC Diphoton Excesses Valid up to the Planck scale
• A four-loop Radiative Seesaw Model
• Collider phenomenology of a unified leptoquark model
• Systematic Study of Diphoton Resonance at 750 GeV from Sgoldstino
• A Flippon Related Singlet at the LHC II
• Asymmetric Dark Matter Models and the LHC Diphoton Excess
• Topological Structure of the Vacuum, Cosmological Constant and Dark Energy
• LHC signatures of neutral pseudo-Goldstone boson in the E6CHM
• 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
• Active Dirac Neutrinos via $SU(2{)}_L$ Doublets in 5d