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arXiv 0709.3157hep-ph
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带张量源的手征拉格朗日量

Chiral Lagrangians with tensor sources

Vicent Mateu

摘要:

手征拉格朗日量中张量源的实现允许计算涉及张量流的格林函数和形状因子,即\bar{q}_i σ^{μν}q_j形式的夸克双线性。虽然在O(p^4)处只出现了四个新项,但我们在O(p^6)处发现了大约一百个。因此,必须确保这组运算符确实是最小的和非冗余的(即,这是一个基础)。我们讨论了矢量介子共振和辐射π介子衰变中的两个唯象应用。

英文摘要:

The implementation of tensor sources in Chiral Lagrangians allows the computation of Green functions and form factors involving tensor currents, that is, quark bilinears of the form \bar{q}_iσ^{μν}q_j. Whereas only four new terms show up at O(p^4), we find around a hundred of them at O(p^6). So it becomes essential to ensure that this set o operators is indeed minimal and non-redundant (i.e., it is a basis). We discuss two phenomenological applications in the context of vector meson resonances and the radiative pion decay.

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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