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A scalar hint from the diboson excess? | | Giacomo Cacciapaglia
; Aldo Deandrea
; Michio Hashimoto
; | | Date: |
11 Jul 2015 | | 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. | | Source: | arXiv, 1507.3098 | | Services: | Forum | Review | PDF | Favorites | |
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