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arXiv 1004.2767nucl-th
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QCD求和规则与诱导的赝标耦合

QCD Sum Rules and the Induced Pseudoscalar Coupling

E. M. Henley, W-Y. P. Hwang, L. S. Kisslinger

摘要:

本文将QCD求和规则推广到外场,确定了诱导赝标耦合常数g_P,验证了部分守恒轴流(PCAC)假设的正确性。这实质上是我们挑选出强子和夸克(QCD)双方的“高阶”效应。得到了一个关于g_P的QCD求和规则,并简要分析了它的预言.结果表明,对g_P的最终预测是非常稳定的。鉴于目前QCD求和规则方法的通用性,我们附录了一些关于该方法可能的未来的讨论。

英文摘要:

We present an extension of the QCD sum rule method in the external fields so as to determine the induced pseudoscalar coupling constant g_P, which tests the validity of the partially conserved axial current (PCAC) hypothesis. This is essentially that we pick out the "higher-order" effects of both the hadron and quark (QCD) sides. A specific QCD sum rules for g_P is obtained and its prediction is briefly analyzed. It turns out that the final prediction on g_P is extremely stable. In view of the versatile nature of the present QCD sum rule methods, we appendix some discussions on the possible future of the method.

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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