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| ====== TTP97-13 Complete O(alpha_s^2) Corrections to Zero-Recoil Sum Rules for B-->D* Transitions ====== |
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| <hidden TTP97-13 Complete O(alpha_s^2) Corrections to Zero-Recoil Sum Rules for B-->D* Transitions > We present the complete O(alpha_s^2) corrections to the |
| Wilson coefficient of the unit operator in the zero-recoil sum rule |
| for the B-->D* transition. We include both perturbative and |
| power-suppressed nonperturbative effects in a manner consistent with |
| the operator product expansion. The impact of these corrections on |
| |V_cb| extracted from semileptonic B-->D* decays near |
| zero recoil is discussed. The mixing of the heavy quark kinetic |
| operator with the unit operator at the two loop level is |
| obtained. O(alpha_s) corrections to a number of |
| power-suppressed operators are calculated. |
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| </hidden> |
| |**Andrzej Czarnecki, Kirill Melnikov, and Nikolai Uraltsev** | |
| |** Phys. Rev. D57 1769 1998 ** | |
| | {{preprints:1997:ttp97-13.pdf|PDF}} {{preprints:1997:ttp97-13.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9706311|arXiv]] | |
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