Speaker
Fiona Kirk
(University of Zurich, PSI)
Description
One of the most minimal and most studied extensions of the Standard Model of particle physics is the $Z'$ boson. The LHC bounds on $Z'$ bosons that couple to quarks are very strong, models involving leptophilic $Z'$ bosons are, however, much less constrained.
We perform global fits to leptophilic $Z'$ models, putting bounds on the $Z'$ couplings to leptons, and show correlations between flavour observables in simplified scenarios. In the case where $Z'$ bosons only couple flavour off-diagonally to muons and taus, we can explain the $(g-2)_\mu$ anomaly, as well as the hints for lepton flavour universality violation in $\tau \to \mu \nu \nu$.
Authors
Andreas Crivellin
(Universitaet Zuerich (CH))
Andrzej Buras
(Munich)
Fiona Kirk
(University of Zurich, PSI)
Claudio Andrea Manzari
Marc Montull Garcia
(Deutsches Elektronen-Synchrotron DESY)
