Matthias König

works on

B-meson decays 1 effective field theory 1 lattice qcd 1 lepton flavor universality 1 qed corrections 1 tau lepton 1

From the 1 of 3 linked papers with an AI index.

collaborators

3 papers

hep-ph2026

QED Corrections to $B^{-} \to I ¨ ^{-} I^ˉ ½_{I ¨} $

Claudia Cornella, Max FerrÃ©, Matthias KÃ¶nig +1

The paper computes the rate of the leptonic decay B⁻→τ⁻ν̄_τ including real and virtual QED corrections using a sequence of effective field theories, providing a factorized expressi…

hep-ph2026

The Simplest B Decay, Precisely

We derive the QCD $\times$ QED factorization theorem governing the leptonic decay $B^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼ (I^^{3})$ at all orders in $I^\pm_{s}$ and $I^\pm$ . Electromagnetic corrections to this deca…

hep-ph2026

Structure-Dependent QED Effects in Exclusive B Decays at Subleading Power

Claudia Cornella, Matthias KÃ¶nig, Matthias Neubert

We derive a factorization theorem for the structure-dependent QED effects in the weak exclusive process $B^{-} \to ℓ^{-} I^ˉ ½_{ℓ}$ , i.e., effects probing the internal structure of t…

QED Corrections to B−→I¨−I^ˉ½I¨​

The Simplest B Decay, Precisely

Structure-Dependent QED Effects in Exclusive B Decays at Subleading Power

QED Corrections to $B^{-} \to I ¨ ^{-} I^ˉ ½_{I ¨} $