Regular Article - Theoretical Physics
Model-independent analysis of processes
Department of Physics, TU Dortmund University, Otto-Hahn-Str.4, 44221, Dortmund, Germany
Accepted: 4 May 2023
Published online: 18 May 2023
We perform a model-independent analysis of processes to test the standard model and probe flavor patterns of new physics. Constraints on Wilson coefficients are obtained from global fits to , , , and radiative decays data. The fits are consistent with the standard model but leave sizable room for new physics. Besides higher-statistics measurements and more data in theory-friendly bins of the dilepton mass, further complementary observables such as angular distributions of , or the baryonic modes , are necessary to resolve the significant degeneracy in the fit for the semileptonic four-fermion operators. Assuming minimal quark flavor violation, the global fit implies tight constraints on the couplings, and hence allows to test this paradigm with improved data. Another benefit from processes is to shed light on the B-anomalies in modes from a new angle. Specifically, studies of lepton flavor-specific and dineutrino modes are informative on the lepton flavor structure. Rare decays can be studied at high luminosity flavor facilities LHCb, Belle II, and a future Z-factory.
© The Author(s) 2023
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