- Abstract:
-
We compute 2-loop QCD corrections to the hard coefficient functions which arise in the factorization formula for B → X u ℓ ν decays in the shape-function region. Our calculation provides the last missing piece required for a NNLO analysis of inclusive semileptonic B decays, which may significantly reduce the theoretical uncertainty in the extraction of the CKM matrix element | V u b |. Among the technical aspects, we find that the 2-loop hard co...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1016/j.nuclphysb.2008.12.018
-
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- Journal:
- NUCLEAR PHYSICS B
- Volume:
- 812
- Issue:
- 1-2
- Pages:
- 264-289
- Publication date:
- 2009-05-01
- DOI:
- ISSN:
-
0550-3213
- URN:
-
uuid:f630c940-4806-4c45-a95a-4f209b9e9699
- Source identifiers:
-
365370
- Local pid:
- pubs:365370
- Language:
- English
- Copyright date:
- 2009
Journal article
NNLO corrections to inclusive semileptonic B decays in the shape-function region
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