New experimental results
LHCb results strengthen hints of a violation of lepton flavour universality
April 7, 2021
Theory DivisionLHCb 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
Publication
A new approach to searching for ultraheavy dark matter
September 9, 2026
The study “First Search for Ultraheavy Dark Matter Using a Magnetically Levitated Particle” , co-authored by IFAE researcher Dorian Amaral and collaborators, explores a new experimental approach to probing interactions of ultraheavy dark matter. The work has been reported on Phys.org