Forward-backward asymmetries in Λb →Λl+l− in the Bethe-Salpeter equation approach
Forward-backward asymmetries in Λb →Λl+l− in the Bethe-Salpeter equation approach
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Bethe-Salpeter 方程方法中 Îb –Îl l – 的前后不对称性
DOI：
10.1088/1674-1137/ac7041
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发表时间：
2022
影响因子：
3.6
通讯作者：
Xin-Heng Guo
中科院分区：
文献类型：
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作者：
Liang-Liang Liu;Su-Jun Cui;Jing Xu;Xin-Heng Guo
本文利用Bethe-Salpeter方程（BSE）研究了夸克-双夸克模型中的前向-后向不对称性。这种方法提供了不同于QCD求和规则的精确形状因子。我们计算了罕见的衰变形状因子，并研究了这些衰变通道中的（集成）向前向后不对称性。我们发现，积分、强子侧不对称性、轻子-强子侧不对称性、纵极化率。
Using the Bethe-Salpeter equation (BSE) we investigate the forward-backward asymmetriesinin the quark-diquark model. This approach provides precise form factors that are different from those of QCD sum rules. We calculate the rare decay form factors forand investigate the (integrated) forward-backward asymmetries in these decay channels. We find that the integrated,,,, the hadron side asymmetries, the lepton-hadron side asymmetries, the longitudinal polarization fractions.