Noises Coming from LHCb Experiment

[joigus]

Interesting noises are coming from the LHCb 'beauty' experiment. Analysis of angular data in decay B⁺→K^*+μ⁺μ^- reveal a 'tension' between the data and predictions of bare Standard Model.

It seems that the results appear at the level of corrections via virtual particles.

https://lhcb-public.web.cern.ch/Welcome.html

Quote

The angular analysis of the B⁺→K^*+μ⁺μ^- decay was performed following an approach similar to that of the B⁰ analysis. The left image above shows the K_s⁰π⁺μ⁺μ^- invariant mass spectrum with a clear enhancement at the B⁺ mass. The right image above shows the P₅’ angular observable as a function of the invariant mass squared, q², of the muon pair. While most of the measured observables agree with SM predictions, local deviations are observed in P₅’ and other angular observables. The discrepancies are in line with those seen in the B⁰ decays, albeit with larger uncertainties. A better description of the data is obtained by a minimal extension of the SM with one free parameter, the Re(C₉). When this model is fit to the measured observables using the FLAVIO phenomenology software, this hypothesis is favoured by 3.1σ with respect to the SM. This is similar to the tension seen in the B⁰→K^*0μ⁺μ^- decay, where the same model was favoured by 3.3σ.

(My emphasis.)

Edited November 1, 2020 by joigus
modified name of the experiment, which is LHCb