On a possibility of a consistent interpretation of diboson excesses at LHC

TL;DR

This paper explores the possibility that recent LHC diboson and diphoton excesses are due to heavy weak boson resonances caused by anomalous triple interactions, providing estimates and predictions consistent with observed data.

Contribution

It proposes a novel interpretation linking LHC excesses to anomalous weak boson interactions and predicts specific effects for future experimental verification.

Findings

Qualitative agreement with ATLAS data

Estimated coupling constant λ = -0.02±0.005

Predicted effects in decay channels involving photons and leptons

Abstract

Recently reported diboson and diphoton excesses at LHC are interpreted to be connected with heavy $WW$ zero spin resonances. The resonances appears due to the wouldbe anomalous triple interaction of the weak bosons, which is defined by well-known coupling constant $\lambda$. The $2\, TeV$ anomaly tentatively corresponds to weak isotopic spin 2 scalar state and the $\gamma\gamma\,\,750\, GeV$ anomaly corresponds to weak isotopic spin 0 pseudoscalar state. We obtain estimates for the effect, which qualitatively agree with ATLAS data. Effects are predicted in a production of $W^+ W^-, (Z,\gamma) (Z,\gamma)$ via resonance $X_{PS}$ with $M_{PS} \simeq 750\,GeV$, which could be reliably checked at the upgraded LHC at $\sqrt{s}\,=\,13\, TeV$. In the framework of an approach to the spontaneous generation of the triple anomalous interaction its coupling constant is estimated to be $\lambda = -\,0.02\pm 0.005$ in an agreement with existing restrictions. Specific predictions of the hypothesis are significant effects in decay channels $X_{PS} \to \gamma\,l^+\,l^-\,, X_{PS} \to l^+\,l^-\,\,l^+\,l^-\,(l = e,\,\mu)$.