154 citations · 259 across the 6 of their papers we have counts for
10 papers · 1 filter
Cabibbo angle anomalies and a global fit to vector-like quarks
Matthew Kirk
The most recent determinations of from superallowed beta decays lead to a discrepancy when compared to the value implied by mesonic CKM measurements combined with CKM unit…
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 de…
Minimal model for the -boson mass, , and quark-mixing-matrix unitarity
Andreas Crivellin, Matthew Kirk, Anil Thapa
The triplet scalar with hypercharge predicts a positive definite shift in the mass, w.r.t.~the Standard Model prediction, if it acquires a vacuum expectation va…
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…
Cabibbo anomaly versus electroweak precision tests: An exploration of extensions of the Standard Model
Matthew Kirk
There is a newly emerging tension between determinations of from different sources (known as the Cabibbo anomaly), which is clearly demonstrated by the new obs…
Anomalies and accidental symmetries: charging the scalar leptoquark under -
Joe Davighi, Matthew Kirk, Marco Nardecchia
While the scalar leptoquark presents a possible tree-level explanation of the flavour anomalies, it suffers from two conceptual problems which are often d…