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arXiv 1611.04400hep-phhep-thnucl-th
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手征AdS/QCD中的重轻介子

Heavy-Light Mesons in Chiral AdS/QCD

Yizhuang Liu, Ismail Zahed

摘要:

本文讨论了定义在AdS空间中的一个极小全息模型,用于描述具有手征对称性的重轻介子和轻介子。该模型由一对手征杨-米尔斯场和快子场组成,它们具有特定的边界条件,在红外区自发地破坏手征对称性。重光光谱和衰减常数进行了明确的评估。在重质量极限下,该模型同时表现出重夸克对称性和手征对称性,并允许明确推导一π介子与重轻介子的轴向耦合。

英文摘要:

We discuss a minimal holographic model for the description of heavy-light and light mesons with chiral symmetry, defined in a slab of AdS space. The model consists of a pair of chiral Yang-Mills and tachyon fields with specific boundary conditions that break spontaneously chiral symmetry in the infrared. The heavy-light spectrum and decay constants are evaluated explicitly. In the heavy mass limit the model exhibits both heavy-quark and chiral symmetry and allows for the explicit derivation of the one-pion axial couplings to the heavy-light mesons.

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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