New experimental results

LHCb results strengthen hints of a violation of lepton flavour universality

April 7, 2021

Theory Division

LHCb has overcome the 3 sigma barrier in the tension between the measurement of the observable RK and the prediction of the SM, reaching 3.1 sigmas. This observable tests the universality (or not) of leptonic flavor. The SM predicts a value of 1 very accurately for this observable.

Marcel Algueró on behalf of the group led by Joaquim Matias presented the implications of this new data in the global analyzes of observables governed by b-> sll in the (virtual) conference of Moriond QCD 2021.

Joaquim Matias is quoted in an article about the results in Diaria Ara

Link to CERN Press release

Latest Group News

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Davide Barbini joined the Theory group as a PhD student

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January 15, 2025

Noé Duarte has joined the theory group as a PhD student

Award

Joaquim Matias Receives 2024 ICREA Acadèmia and IPPP DIVA Award

December 18, 2024

Joaquim Matias has been awarded the 2024 ICREA Acadèmia. The announcement was made this week following the resolution of the ICREA Acadèmia 2024 call, managed by AGAUR.