Abstract
The LHC collaborations ATLAS and CMS recently reported on the excess of the events in the diphoton final states at the invariant mass of about \(750~ \text {GeV}\). In this article we speculate on the possibility that the excess arises from the neutral CP-even component \(\phi \) of the scalar triplet \( \Phi \) of the \(SU(3)_{c}\times SU(3)_{L}\times U(1)_{X}\)\((3{-}3{-} 1)\) model that has a \(U(1)_{X}\) charge equal to \(X=-1/3\) and acquires a vacuum expectation value larger than the electroweak symmetry breaking scale. The interactions of the scalar field \(\phi \) with the photon and gluon pairs are mediated by the virtual vector-like fermions which appear as components of the anomaly-free chiral fermion representations of the \(3{ -}3{-}1\) gauge group.
Highlights
The experimental ATLAS and CMS collaborations recently presented the results of the analysis of the early data obtained fartotmhe tcheensteerc-oonf-dmLaHssCenreurngyof√ths e=pr1o3toTne–Vpro[1to, 2n].coInlltiesrieosntsingly, both experiments observed the excess of the events with respect to the background in the diphoton final states at the invariant mass of around 750 GeV
We point out that the diphoton signal recently observed by the ATLAS and CMS collaborations at the invariant mass ∼750 GeV could arise from the φ, electrically neutral CP-even component of one of the scalar triplets representation of the 3-3-1 model
Its couplings to photons and gluons are mediated by the loops that involve exotic vectorlike fermions
Summary
The experimental ATLAS and CMS collaborations recently presented the results of the analysis of the early data obtained fartotmhe tcheensteerc-oonf-dmLaHssCenreurngyof√ths e=pr1o3toTne–Vpro[1to, 2n].coInlltiesrieosntsingly, both experiments observed the excess of the events with respect to the background in the diphoton final states at the invariant mass of around 750 GeV. The ATLAS found the signal in more than a single bin, preferring the large width of the resonance that corresponds to about 6 % of its mass ( 45 GeV) This feature has not yet been confirmed by the CMS collaboration. The anomaly free assignment of the fermion fields to the representations of the 3-3-1 group leads to the appearance of the non-standard leptons and quarks that are vector-like under the SM gauge group. These fermions mediate the interactions of the scalar boson with the gluon and photon pairs at the loop(s) level
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