J. Virto

collaborators

4 papers

hep-ph2025

Four-body contributions to B -> Xs gamma at NLO

Tobias Huber, Michal Poradzinski, Javier Virto

Ongoing efforts to reduce the perturbative uncertainty in the B -> Xs gamma decay rate have resulted in a theory estimate to NNLO in QCD. However, a few contributions from multi-pa…

hep-ph2025

Towards a Global Analysis of the $b \to c u ˉ q$ Puzzle

Stefan Meiser, Danny van Dyk, Javier Virto

We study the nonleptonic decays $B ˉ_{s}^{0} \to D_{s}^{(*) +} I ¨ ^{-}$ and $B ˉ^{0} \to D^{(*) +} K^{-}$ within the Weak Effective Theory (WET) up to mass-dimension six. We revisit the c…

hep-ph2025

On the two-loop penguin contributions to the Anomalous Dimensions of four-quark operators

Pol Morell, Javier Virto

We revisit the Next-to-Leading Order (two-loop) contributions to the Anomalous Dimensions of $I^ F = 1$ four-quark operators in QCD. We devise a test for anomalous dimensions, that…

hep-ph2025

Dispersive Analysis of $B \to K^{(*)}$ and $B_{s} \to I ¨ $ Form Factors

We perform the first simultaneous dispersive analysis of the $B \to K$ , $B \to K^{*}$ , and $B_{s} \to I ¨ $ form factors. By means of an improved parametrization, we take into account the f…

Four-body contributions to B -> Xs gamma at NLO

Towards a Global Analysis of the b→cuˉq Puzzle

On the two-loop penguin contributions to the Anomalous Dimensions of four-quark operators

Dispersive Analysis of B→K(∗) and Bs​→I¨ Form Factors

Towards a Global Analysis of the $b \to c u ˉ q$ Puzzle

Dispersive Analysis of $B \to K^{(*)}$ and $B_{s} \to I ¨ $ Form Factors