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arXiv 1002.0513hep-ph
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半轻子和强子B衰变的NNLO修正

NNLO corrections to semileptonic and hadronic B decays

Guido Bell

摘要:

本文综述了半轻子和强子B介子衰变微扰计算的最新进展,重点讨论了次-次-主导阶(NNLO)修正的唯象意义。具体地说,我们考虑了树支配的B -> pi pi/pi rho/rho rho衰变的CP平均分支比以及从B -> X_u l nu确定|V_ub|.

英文摘要:

We review recent progress in the perturbative calculations for semileptonic and hadronic B meson decays with an emphasis on the phenomenological implications of the next-to-next-to-leading order (NNLO) corrections. Specifically, we consider CP-averaged branching ratios of tree-dominated B -> pi pi/pi rho/rho rho decays and the inclusive determination of |V_ub| from B -> X_u l nu.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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