Flavor structure and coupling selection rule from intersecting D-branes
Flavor structure and coupling selection rule from intersecting D-branes
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DOI：
10.1103/physrevd.72.086003
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发表时间：
2005-04
影响因子：
5
通讯作者：
Tetsutaro Higaki;N. Kitazawa;Tatsuo C. Kobayashi;Kei-jiro Takahashi
中科院分区：
文献类型：
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作者：
Tetsutaro Higaki;N. Kitazawa;Tatsuo C. Kobayashi;Kei-jiro Takahashi
我们研究了 T{sup 2}xT{sup 2}xT{sup 2} 上相交 D 膜构型的风味结构和耦合选择规则及其轨道折叠/东方折叠压缩。我们制定了 Yukawa 联轴器的选择规则及其对通用 n 点联轴器的扩展。我们研究了可能的风味结构，该结构可以从相交的 D 膜构型中出现。然后，我们证明了允许的汤川耦合对应的状态的相交数之间存在一定的规律，并且发现它们的耦合是由离散阿贝尔对称性决定的。我们对此类模型中的风味结构和耦合选择规则的研究表明，在超对称标准模型的最小物质含量框架内，没有解决方案仅从树级的弦三点耦合导出真实的汤川矩阵。
We study flavor structure and the coupling selection rule in intersecting D-brane configurations on T{sup 2}xT{sup 2}xT{sup 2} as well as its orbifold/orientifold compactifications. We formulate the selection rule for Yukawa couplings and its extensions to generic n-point couplings. We investigate the possible flavor structure, which can appear from intersecting D-brane configuration. Then, we show there is a certain rule among intersecting numbers for states corresponding to allowed Yukawa couplings, and also it is found that their couplings are determined by discrete Abelian symmetries. Our studies on the flavor structure and the coupling selection rule in this class of models show that there is no solution to derive realistic Yukawa matrices only from stringy 3-point couplings at the tree-level within the framework of the minimal matter content of the supersymmetric standard model.