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arXiv 2009.08756hep-ph
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完成非轻子底-上夸克衰变的$1/m_b^3$修正

Completing $1/m_b^3$ corrections to non-leptonic bottom-to-up-quark decays

Daniel Moreno Torres

摘要:

我们计算了六维二夸克算符对重强子非轻子衰变宽度的贡献,这是由于重夸克展开中的味变的底-上夸克跃迁。得到了Darwin项$ρ_D$和自旋轨道项$ρ_{\rm LS}$的解析表达式,并具有高阶精度.

英文摘要:

We compute the contributions of dimension six two-quark operators to the non-leptonic decay width of heavy hadrons due to the flavor changing bottom-to-up-quark transition in the heavy quark expansion. Analytical expressions for the Darwin term $ρ_D$ and the spin-orbit term $ρ_{\rm LS}$ are obtained with leading order accuracy.

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