Speaker
Claire Chevallier
(IJCLab - Université Paris Saclay)
Description
The small masses of neutrinos strongly suggest the existence of mass-generating mechanisms beyond the Standard Model, likely involving additional neutral lepton fields (either left-handed, right-handed, or both). These mechanisms can give rise to effective four-fermion couplings, which are accessible through semileptonic decays.
By analyzing the angular spectra of these semileptonic decays, we've identified novel observables. These observables are precisely zero within the Standard Model, making them highly sensitive to the presence of new neutral leptons. This talk will demonstrate how these specific observables can be used to probe the mass and handedness of these additional neutral leptons.
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Author
Claire Chevallier
(IJCLab - Université Paris Saclay)
Co-authors
Dr
Damir BECIREVIC
(IJCLab, CNRS and Université Paris-Saclay)
Lovre Pavicic
Dr
Nejc Košnik
(J. Stefan Institute, University of Ljubljana)
S Fajfer