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

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 $2TeV$ anomaly tentatively corresponds to weak isotopic spin 2 scalar state and the $\gamma \gamma 750GeV$ 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 $M_{PS}\simeq 750GeV$, which could be reliably checked at the upgraded LHC at $\sqrt{s}=13TeV$. 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 $X_{PS}\to \gamma l^{+}{l}^{-},X_{PS}\to l^{+}{l}^{-}{l}^{+}{l}^{-}(l=e,\mu )$.

Comments: 8 pages, 2 figures; title changed, additional estimates introduced, few new references added