Matthew Kirk

collaborators

4 papers

hep-ph2026

New insights into the $b \to c u ˉ q$ puzzle through Top-Bottom synergies

Jack Y. Araz, Christoph Englert, Matthew Kirk +1

Anomalies in the non-leptonic $B ˉ^{0} \to D^{(*) +} K^{(*) -}$ and $B ˉ_{s}^{0} \to D_{s}^{(*) +} I ¨ ^{-}$ decays may be an indication of physics beyond the Standard Model,…

hep-ph2026

Global Determination of $∣ V_{u s} ∣$

Matthew Kirk, Danny van Dyk

In light of ongoing issues with the first-row unitarity test of the CKM matrix, we showcase a global fit to measurements of $K \to ℓ I^½$ , $K \to I ¨ ℓ I^½$ , $I ¨ \to K I^½$ , and $Ï\t…

hep-ph2025

Collider-Flavour Complementarity from the bottom to the top

Oliver Atkinson, Christoph Englert, Matthew Kirk +1

Motivated by recently observed anomalies in the flavour sector, we analyse the potential of measurements of top quarks at the Large Hadron Collider (LHC) to provide complementary c…

hep-ph2025

A Simple Parametrisation of the Pion Form Factor

We discuss a novel and simple parametrisation of the pion vector form factor that transparently connects spacelike and timelike regions of the momentum transfer $q^{2}$ . Our parametr…

New insights into the b→cuˉq puzzle through Top-Bottom synergies

Global Determination of ∣Vus​∣

Collider-Flavour Complementarity from the bottom to the top

A Simple Parametrisation of the Pion Form Factor

New insights into the $b \to c u ˉ q$ puzzle through Top-Bottom synergies

Global Determination of $∣ V_{u s} ∣$