6533b82dfe1ef96bd1291d94
RESEARCH PRODUCT
LHC diphoton resonance from gauge symmetry
Avelino VicenteSofiane M. BoucennaStefano Morisisubject
QuarkPhysicsParticle physicsLarge Hadron ColliderPhoton010308 nuclear & particles physicsPhysics beyond the Standard ModelScalar (mathematics)FOS: Physical sciencesFermionParameter space01 natural sciencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsGauge symmetrydescription
Motivated by what is possibly the first sign of new physics seen at the LHC, the diphoton excess at $750$ GeV in ATLAS and CMS, we present a model that provides naturally the necessary ingredients to explain the resonance. The simplest phenomenological explanation for the diphoton excess requires a new scalar state, $X(750)$, as well as additional vector-like (VL) fermions introduced in an ad-hoc way in order to enhance its decays into a pair of photons and/or increase its production cross-section. We show that the requiered VL quarks and their couplings can emerge naturally from a complete framework based on the $SU(3)_L \otimes U(1)_\mathcal{X}$ gauge symmetry.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-12-21 | Physical Review D |