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arXiv 2212.05087nucl-thnucl-ex
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晕核的弱衰变

Weak decay of halo nuclei

Wael Elkamhawy, Hans-Werner Hammer, Lucas Platter

AI总结:

本研究利用晕核簇有效场论研究单中子晕核的β缓发质子发射,计算直接衰变及共振末态相互作用情形,分析$^{11}$Be衰变并对比实验数据,还预测了$^{19}$C的相关分支比。

摘要:

我们采用晕核簇有效场论,研究单中子晕核向质子-芯连续态的弱衰变,即晕核的β缓发质子发射。一方面,我们计算了直接衰变为连续态的过程;另一方面,我们考虑了质子与芯之间存在共振末态相互作用的情况。我们给出了理论形式,并详细讨论了其在$^{11}$Be衰变中的应用,还将分支比和共振参数的计算结果与最新实验结果进行了对比。作为另一个例子,我们研究了$^{19}$C的情况,并预测了其β缓发质子发射的分支比。

英文摘要:

We investigate the weak decay of one-neutron halo nuclei into the proton-core continuum, i.e., beta-delayed proton emission from the halo nucleus using a cluster effective field theory for halo nuclei. On the one hand, we calculate the direct decay into the continuum. On the other hand, we consider the case of resonant final state interactions between the proton and the core. We present our formalism and discuss the application to the decay of $^{11}$Be in detail. Moreover, we compare to recent experimental results for the branching ratio and resonance parameters. As another example, we consider the case of $^{19}$C and predict the branching ratio for beta-delayed proton emission.

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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