Tim Kretz

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20242026

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hep-ph2025

Heavy sterile neutrinos in $B$ decays and new QCD corrections to their semi-hadronic decay rates

Tim Kretz

In modern experiments on flavour physics it is possible to search for the decays of $B$ or $D$ mesons or $τ$ leptons into final states with heavy neutrinos $N$ (a.k.a. heavy neutra…

hep-ph2025

QCD corrections to charged-current decays with Heavy Sterile Neutrinos in initial or final state and their impact on $τ$ decays

Tim Kretz, Ulrich Nierste

Searches for a Heavy Sterile Neutrino $N$ profit from precise predictions of inclusive decay rates, entering predictions for branching fractions and lifetime. Once decay channels i…

hep-ph2025

$b \to c$ semileptonic sum rule: Extension to angular observables

Motoi Endo, Syuhei Iguro, Tim Kretz +2

Lepton flavor universality is a key prediction of the Standard Model of particle physics and any violation of it immediately indicates the existence of new physics. Given the recen…

Heavy sterile neutrinos in B decays and new QCD corrections to their semi-hadronic decay rates

QCD corrections to charged-current decays with Heavy Sterile Neutrinos in initial or final state and their impact on τ decays

b→c semileptonic sum rule: Extension to angular observables

Heavy sterile neutrinos in $B$ decays and new QCD corrections to their semi-hadronic decay rates

QCD corrections to charged-current decays with Heavy Sterile Neutrinos in initial or final state and their impact on $τ$ decays

$b \to c$ semileptonic sum rule: Extension to angular observables