# A scalar hint from the diboson excess?

Abstract : In view of the recent diboson resonant excesses reported by both ATLAS and CMS, we suggest that a new weak singlet pseudo-scalar particle, $\eta_{WZ}$, may decay into two weak bosons while being produced in gluon fusion at the LHC. The couplings to gauge bosons can arise as in the case of a Wess-Zumino-Witten anomaly term, thus providing an effective model in which the present observed excess in the diboson channel at the LHC can be studied in 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.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2015, 115, pp.171802. 〈10.1103/PhysRevLett.115.171802〉
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http://hal.in2p3.fr/in2p3-01176887
Contributeur : Sylvie Flores <>
Soumis le : jeudi 16 juillet 2015 - 10:42:59
Dernière modification le : jeudi 15 mars 2018 - 11:40:06

### Citation

G. Cacciapaglia, A. Deandrea, M. Hashimoto. A scalar hint from the diboson excess?. Physical Review Letters, American Physical Society, 2015, 115, pp.171802. 〈10.1103/PhysRevLett.115.171802〉. 〈in2p3-01176887〉

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