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arXiv 1010.3080hep-ph
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重-轻形状因子:点形式相对论量子力学中的Isgur-Wise函数

Heavy-light form factors: The Isgur-Wise function in point-form relativistic quantum mechanics

María Gómez Rocha, Wolfgang Schweiger

摘要:

本文在点形式相对论量子力学的框架下研究了重轻介子的电磁和弱形状因子。为了这个目的,我们治疗的物理过程中,这样的电弱形状因子提取的耦合通道的方法,占中间规范玻色子的动力学。结果表明,重夸克对称性是尊重这一提法。在重夸克极限下,得到了Isgur-Wise函数的一个简单解析表达式。数值研究了重夸克对称性由于重夸克质量的实际值而破缺的情况。

英文摘要:

We investigate electromagnetic and weak form factors of heavy-light mesons in the context of point-form relativistic quantum mechanics. To this aim we treat the physical processes from which such electroweak form factors are extracted by means of a coupled channel approach which accounts for the dynamics of the intermediate gauge bosons. It is shown that heavy-quark symmetry is respected by this formulation. A simple analytical expression is obtained for the Isgur-Wise function in the heavy-quark limit. Breaking of heavy-quark symmetry due to realistic values of the heavy-quark mass are studied numerically.

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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