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arXiv 2208.02404nucl-thhep-phnucl-ex
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有效场论中低能弹性 α-$^{12}$C 散射的 $S$ 矩阵

The $S$ matrices of elastic $α$-$^{12}$C scattering at low energies in effective field theory

Shung-Ichi Ando

AI总结:

本文基于有效场论,利用 $^{16}$O 阈下束缚态与共振态振幅构造 α-$^{12}$C 散射 $S$ 矩阵,并通过拟合低能相移数据验证了理论描述能力。

摘要:

本文在有效场论框架下研究了 $l=0,1,2,3,4,5,6$ 时的低能弹性 α-$^{12}$C 散射。作者讨论了如何利用 $^{16}$O 的阈下束缚态和共振态振幅来构造弹性 α-$^{12}$C 散射的 $S$ 矩阵,这些振幅由有效拉格朗日量计算得到。$S$ 矩阵中出现的参数通过拟合 $p$-$^{15}$N 破裂阈能以下的相移数据确定,结果表明该理论能够很好地描述这些相移。

英文摘要:

The elastic $α$-$^{12}$C scattering at low energies for $l=0,1,2,3,4,5,6$ is studied in effective field theory. We discuss the construction of the $S$ matrices of elastic $α$-$^{12}$C scattering in terms of the amplitudes of sub-threshold bound and resonant states of $^{16}$O, which are calculated from the effective Lagrangian. The parameters appearing in the $S$ matrices are fitted to the phase shift data below the $p$-$^{15}$N breakup threshold energy, and we find that the phase shifts are well described within the theory.

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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