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arXiv 2201.11555hep-phnucl-th
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用哈密顿有效场论研究核子光生π介子

Pion Photoproduction off Nucleon with Hamiltonian Effective Field Theory

Dan Guo, Zhan-Wei Liu

摘要:

我们利用哈密顿有效场论和格点量子色动力学模拟方法分析了负宇称通道中的$γN\toπN$过程。我们提供了光生π介子的散射振幅,并提取了电偶极子振幅$E_{0+}$。$N^*(1535)$中的三夸克成分对提高我们的结果与实验数据的一致性是很重要的。

英文摘要:

We analyze the $γN\toπN$ process in the negative parity channel with Hamiltonian effective filed theory which is successful in studying the nucleon resonances associated with the meson-nucleon scattering and lattice QCD simulations. We provide the scattering amplitude of pion photoproduction and extract the electric dipole amplitudes $E_{0+}$. The triquark component in $N^*(1535)$ is important for improving the consistence between our results and the experimental data.

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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