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(Seminar) QCD Aspects of Radiative Leptonic B Decays
04/17
2019
- Title (Seminar) QCD Aspects of Radiative Leptonic B Decays
- Speaker
- Date
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Abstract
| CAS Key Laboratory of Theoretical Physics | |||
| Institute of Theoretical Physics | |||
| Chinese Academy of Sciences | |||
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| Venue 地点 | Room 6420, ITP NEW BUILDING | ||
| Abstract 摘要 | I will discuss the theory status of computing the subleading power corrections to radiative leptonic B decays in QCD, focusing on factorization properties of the corresponding SCET matrix elements in the heavy quark expansion as well as the infrared subtraction scheme in the presence of the evanescent operators. Determinations of the inverse moment for the leading-twist B-meson LCDA from the integrated branching fractions of B to \gamma l nu, with a photon energy cut E_{\gamma} > E_{cut}, will be also discussed, including perspectives on the future measurements at the Bell II experiment. | ||
| Contact Person 所内联系人 | Gang Yang | ||