Structure functions for the inclusive semileptonic $b$-quark decay at NNLO: a semi-analytic calculation

A. Broggio, B. Capdevila, A. Ferroglia +1

We present a study of the inclusive charmless semileptonic $b$ decay, $b\to X_u\ell \bar{\nu }$ at next-to-next-to-leading order (NNLO) in perturbative QCD, with the primary aim of extra…