论文标题

D(D,P)3H和D(D,N)3HE过程的理论研究在低能

Theoretical study of the d(d,p)3H and d(d,n)3He processes at low energies

论文作者

Viviani, M., Girlanda, L., Kievsky, A., Logoteta, D., Marcucci, L. E.

论文摘要

我们介绍了D(D,P)3H和D(D,N)3HE的理论研究,该过程是能源生产和大爆炸核合成的能量。我们使用Ab-Initio超球形谐波方法准确地解决了四个身体散射问题,从包括现代的两核和三核相互作用(包括手性有效的田间理论)开始。我们报告了天体物理因子,五重抑制因子以及各种单一和双极化可观察物的结果。通过改变用于在高动量下正规化手性相互作用的截止参数来提供对所有这些数量的“理论不确定性”的估计。

We present a theoretical study of the processes d(d,p)3H and d(d,n)3He at energies of interest for energy production and for big-bang nucleosynthesis. We accurately solve the four body scattering problem using the ab-initio hyperspherical harmonic method, starting from nuclear Hamiltonians which include modern two- and three-nucleon interactions, derived in chiral effective field theory. We report results for the astrophysical factor, the quintet suppression factor, and various single and double polarized observables. An estimate of the "theoretical uncertainty" for all these quantities is provided by varying the cutoff parameter used to regularize the chiral interactions at high momentum.

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