Speaker
Matteo Fael
(CERN)
Description
We present a new global fit for inclusive $|V_{cb}|$ based on the Kolya open-source library, utilizing the full available set of spectral moments of semileptonic $B \to X_c \ell \bar \nu_\ell$ decays with state-of-the-art precision. Our approach includes a novel prescription to estimate the uncertainty arising from missing higher-order contributions of order $1/m^4$ in the heavy quark expansion (HQE). We review various approaches on how to incorporate theoretical uncertainties and correlations, studying their impact on the value of inclusive $|V_{cb}|$ and HQE parameters. Additionally, we conduct a detailed investigation into the compatibility of $|V_{cb}|$ using different sets of experimental inputs.
| I read the instructions above | Yes |
|---|
Author
Matteo Fael
(CERN)
Co-authors
Florian Urs Bernlochner
(University of Bonn (DE))
Ilija Milutin
(Universitat Siegen)
Keri Vos
(Nikhef National institute for subatomic physics (NL))
Markus Tobias Prim
(University of Bonn (DE))
