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arXiv 0806.4529hep-ph
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手征微扰理论的色散方法

Dispersive Approach to Chiral Perturbation Theory

M. Zdrahal, J. Novotny

摘要:

我们将Stern,Sazdjian和Fuchs基于色散关系的重建定理推广到所有赝标八重态介子(pi,K,eta)的(2 -> 2)散射的情况。我们制定它在一般的方式,也包括讨论的假设定理。它被用来获得所有这样的过程的振幅在同位旋限制到一个循环的顺序(可以直接扩展到两个循环)独立于特定的功率计数计划的手征微扰理论的问题。给出了这种一般形式的结果。

英文摘要:

We generalise the reconstruction theorem of Stern, Sazdjian, and Fuchs based on the dispersion relations to the case of the (2 -> 2) scattering of all the pseudoscalar octet mesons (pi, K, eta). We formulate it in a general way and include also a discussion of the assumptions of the theorem. It is used to obtain the amplitudes of all such processes in the isospin limit to the one-loop order (and can be straightforwardly extended to two loops) independently on the particular power-counting scheme of the chiral perturbation theory in question. The results in this general form are presented.

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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