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arXiv 1707.09690hep-phhep-latnucl-th
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$Δ(1232)$为单圈的手征拉格朗日函数

Chiral Lagrangians with $Δ(1232)$ to one loop

Shao-Zhou Jiang, Yan-Rui Liu, Hong-Qian Wang

摘要:

我们通过将$Δ(1232)$作为一个明确的自由度来构造洛伦兹不变的手征拉格朗日量,其阶数为$\mathcal{O}(p^4)$。可以使用它们对涉及$Δ(1232)$的过程进行完整的单循环调查。对于$πΔΔ$拉格朗日量,得到38个$\mathcal{O}(p^3)$阶的独立项和318个$\mathcal{O}(p^4)$阶的独立项。对于$πNΔ$拉格朗日量,我们得到33个$\mathcal{O}(p^3)$阶的独立项和218个$\mathcal{O}(p^4)$阶的独立项。对重子投影也作了简要的讨论。

英文摘要:

We construct the Lorentz-invariant chiral Lagrangians up to the order $\mathcal{O}(p^4)$ by including $Δ(1232)$ as an explicit degree of freedom. A full one-loop investigation on processes involving $Δ(1232)$ can be performed with them. For the $πΔΔ$ Lagrangian, one obtains 38 independent terms at the order $\mathcal{O}(p^3)$ and 318 independent terms at the order $\mathcal{O}(p^4)$. For the $πNΔ$ Lagrangian, we get 33 independent terms at the order $\mathcal{O}(p^3)$ and 218 independent terms at the order $\mathcal{O}(p^4)$. The heavy baryon projection is also briefly discussed.

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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