Perturbative corrections to power suppressed effects in $\bar B\to X_u\ell\nu$

Bernat Capdevila; Paolo Gambino; Soumitra Nandi

Perturbative corrections to power suppressed effects in $\bar B\to X_u\ell\nu$

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arxiv 2102.03343 v2 pith:SNI3WYPY submitted 2021-02-05 hep-ph

Bernat Capdevila , Paolo Gambino , Soumitra Nandi This is my paper · ORCID

classification hep-ph

keywords correctionsdecaysagreesalphacalculationcoefficientscomputeconstraints

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abstract

We compute the $O(\alpha_s)$ corrections to the Wilson coefficients of the dimension five operators in inclusive semileptonic $B$ decays in the limit of a massless final quark. Our calculation agrees with reparameterization invariance and with previous results for the total width and places constraints on the shape functions that enter those decays.

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Data determination of HQET parameters in inclusive charm decays
hep-ph 2025-02 conditional novelty 6.0 of 10

The first data-driven determination of the HQET parameters mu_pi^2, mu_G^2, rho_D^3 and rho_LS^3 for D0, D+ and Ds mesons is obtained from inclusive semileptonic decay widths and electron energy moments.

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