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arXiv 0802.2530hep-ph
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大$N_C$共振求和规则及分波频散分析

Resonance sum rules from large $N_C$ and partial wave dispersive analysis

Zhi-Hui Guo

摘要:

本文将大$N_C$方法与分波色散理论相结合,在不依赖任何显式共振拉氏量的情况下,分析了$ππ$散射,得到了一些有趣的结果:(a)包含标量介子贡献的一般KSRF关系,(b)共振耦合之间的新关系,并在几个具体模型中进行了深入的分析,(c)在某些情况下,得到了一些新的结果。(c)在与$ππ$散射有关的手征微扰理论中,根据共振的质量和衰减宽度,能量常数较低。

英文摘要:

Combining large $N_C$ techniques and partial wave dispersion theory to analyze the $ππ$ scattering, without relying on any explicit resonance lagrangian, some interesting results are derived: (a) a general KSRF relation including the scalar meson contribution; (b) a new relation between resonance couplings, with which we have made an intensive analysis in several specific models; (c) low energy constants in chiral perturbation theory related with $ππ$ scattering in terms of the mass and decay width of resonances.

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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