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 — preprints:1997:ttp97-24 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP97-24 |V_cb| from semileptonic B decays with two-loop QCD accuracy  ====== + + + Recent progress in calculating ${\cal O}(\alpha _s ^2)$ corrections + to inclusive and exclusive semileptonic $b \to c$ transitions + is  reviewed. The impact of these corrections on the $|V_{cb}|$\ + determination from both inclusive  and exclusive $B$ decays is + discussed. + + + |**Andrzej Czarnecki and Kirill Melnikov**  | + |**     Proceedings of the fifth conference Beyond the Standard Model'', May 1997, Balholm, Norway; published by the American Institute of Physics, AIP conference proceedings 415, 1997. **  | + | {{preprints:1997:ttp97-24.pdf|PDF}} {{preprints:1997:ttp97-24.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9710307|arXiv]]   | + | |