5. Theoretical Physics (CSN4)

Toward a coherent picture of flavour and diphoton anomalies

by Dr Dario Buttazzo (Physik-Institut, Universität Zürich)

Aula Seminari (LNF)

Aula Seminari


Via Enrico Fermi, 40 00044 Frascati (Roma)
We propose a coherent explanation for the 750 GeV diphoton anomaly and the hints of deviations from Lepton Flavor Universality in B decays in terms a new strongly interacting sector with vector-like confinement. The diphoton excess arises from the decay of one of the pseudo-Nambu-Goldstone bosons of the new sector, while the flavour anomalies are a manifestation of the exchange of the corresponding vector resonances (with masses in the 1.5–2.5 TeV range). We provide explicit examples (with detailed particle content and group structure) of the new sector, discussing both the low-energy flavour-physics phenomenology and the signatures at high pT. We show that specific models can provide an excellent fit to all available data. A key feature of all realisations is a sizeable broad excess in pp → τ τ (bb), that should be accessible at the LHC in the near future. Based on arXiv:1604.03940