Publications (21)
A window onto leptoquarks?
Matthew Kirk, Shohei Okawa, Keyun Wu
Upcoming neutrino telescopes promise a new window onto the interactions of neutrinos with matter at ultrahigh energies (- GeV), and the possibility to detect d…
- mixing interplay with anomalies
Luca Di Luzio, Matthew Kirk, Alexander Lenz
After reviewing the theoretical uncertainties entering the Standard Model determination of the mass difference of the neutral - meson system, , we di…
One constraint to kill them all?
Luca Di Luzio, Matthew Kirk, Alexander Lenz
Many new physics models that explain the intriguing anomalies in the -quark flavour sector are severely constrained by -mixing, for which the Standard Model prediction and…
Charming new physics in rare B-decays and mixing?
Sebastian Jäger, Matthew Kirk, Alexander Lenz +1
We conduct a systematic study of the impact of new physics in quark-level transitions on -physics, in particular rare -decays and -meson lifetime obser…
Global Fit of Modified Quark Couplings to EW Gauge Bosons and Vector-Like Quarks in Light of the Cabibbo Angle Anomaly
Andreas Crivellin, Matthew Kirk, Teppei Kitahara +1
There are two tensions related to the Cabibbo angle of the CKM matrix. First, the determinations of from , , and decays disagree at the leve…
First-Generation New Physics in Simplified Models: From Low-Energy Parity Violation to the LHC
Andreas Crivellin, Martin Hoferichter, Matthew Kirk +2
New-physics (NP) constraints on first-generation quark-lepton interactions are particularly interesting given the large number of complementary processes and observables that have…