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arXiv 1902.03395hep-ph
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$\mathcal{O}(p^3)$上扩展质量壳层方案中的介子-重子散射

Meson-baryon Scattering in Extend-on-mass-shell scheme at $\mathcal{O}(p^3)$

Junxu Lu, Lisheng Geng, Xiulei Ren, Menglin Du

摘要:

在协变重子手征微扰理论中,我们研究了赝标介子与一个基态八重态重子的散射。我们删除了功率计数中断项与扩展的质量壳计划。我们进行了第一次联合研究的π-核子和K-核子散射数据,并表明,协变重子手征微扰理论可以提供一个合理的描述的实验数据的两个通道。

英文摘要:

In this present work, we study the scattering of a pseudoscalar meson off one ground state octet baryon in covariant baryon chiral perturbation theory up to the next-to-next-to-leading order. We remove the power counting breaking terms with the extended-on-mass-shell scheme. We perform the first combined study of the pion-nucleon and kaon-nucleon scattering data and show that the covariant baryon Chiral perturbation theory can provide a reasonable description of the experimental data for both channels.

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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