论文标题
非律师$ b $衰减的最新发展
Some recent developments in nonleptonic $B$ decays
论文作者
论文摘要
我报告了$ b _ {（s）} $ meson的两体非质量衰减领域的三个近期主题。在QCD分解中对领先的企鹅振幅的两环nnlo校正的计算，在颜色允许的树级衰变中出现了难题，将QCD因子化与$ SU（3）$ SU（3）$ SUMENTRY的结合，以估计估计弱量的尺寸。
I report on three recent topics from the field of two-body nonleptonic decays of $B_{(s)}$ mesons. The computation of two-loop NNLO corrections to the leading penguin amplitudes in QCD factorisation, puzzles that have emerged in colour-allowed tree-level decays to heavy-light final states, and a combination of QCD factorisation with $SU(3)$ flavour symmetry to estimate the size of weak-annihilation amplitudes.
