Weak decays of heavy mesons in the static quark approximation

Weak decays of heavy mesons in the static quark approximation
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DOI:
10.1016/0370-2693(89)90566-2
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发表时间:
1989-10
期刊:
影响因子:
4.4
通讯作者:
N. Isgur;M. Wise
N. Isgur;M. Wise
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
N. Isgur;M. Wise

文献摘要

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当一个或多个夸克比强子标度重时,QCD的低能有效拉格朗日量中出现了一些新的对称性。我们利用这些静态的夸克对称性,导出模型无关的规范化的一些弱强子矩阵元素,涉及重夸克,以及这些矩阵元素之间的许多关系。我们简要地讨论了如何使用这些条件中的一些来改善小林-Maskawa角的测定。
When one or more quarks are heavy compared to hadronic scales, some new symmetries appear in the low energy effective lagrangian for QCD. We exploit these static quark symmetries to derive model-independent normalizations of some weak hadronic matrix elements involving heavy quarks, as well as many relationships between such matrix elements. We briefly discuss how some of these conditions can be used to improve determinations of Kobayashi-Maskawa angles.