%0 Journal Article
%T A scalar hint from the diboson excess?
%A Giacomo Cacciapaglia
%A Aldo Deandrea
%A Michio Hashimoto
%J Physics
%D 2015
%I arXiv
%R 10.1103/PhysRevLett.115.171802
%X In view of the recent diboson resonant excesses reported by both ATLAS and CMS Collaborations, we suggest that a new weak singlet pseudo-scalar particle, $\eta_W$, may decay into two weak bosons while being produced in gluon fusion at the LHC. The couplings to the gauge bosons can arise from a Wess-Zumino-Witten anomaly term and thus we study an effective model based on the anomaly term as a well motivated phenomenological model. In models where the pseudo-scalar arises as a composite state, the coefficients of the anomalous couplings can be related to the fermion components of the underlying dynamics. We provide an example to test the feasibility of the idea.
%U http://arxiv.org/abs/1507.03098v3