Orateur
Description
The discrepancies between 𝑏→𝑠ℓ+ℓ− data and the corresponding Standard Model predictions constitute a very intriguing hint for new physics and many scenarios that can account for these anomalies have been proposed in the literature. However, only a single light new physics explanation, with a mass below the B meson scale, is possible: a light 𝑍′ boson.
I will discuss this solution together with the impact on 𝐵→𝐾(∗)+invisible, Drell-Yan searches for muon pairs at LHC and 𝑒+𝑒−→𝜇+𝜇−+ invisible. I will point out that the forthcoming improved limits on these processes, including the experimental sensitivities required for a proper treatment of the necessarily sizeable 𝑍′ width, can rule out a 𝑍′ explanation of 𝑏→𝑠ℓ+ℓ− data with a mass below ~4 GeV.
