论文标题
中微子混合在核快速中子捕获过程中
Neutrino mixing in nuclear rapid neutron-capture processes
论文作者
论文摘要
超新星中重物元素形成的可能机制是快速中子机制（R-Process）。这取决于电子划分$ y_e $，该数量由β-末期比例确定。在本文中，我们着重于在存在大量中微子的情况下计算电子衰减率。然后，将产生的表达式用于计算进入快速中子捕获的核反应。我们将天体物理参数固定在核心折叠超新星的情况下。中微子部门包括一个质量方案和活性中微子的混合角度，还包括在活性中微子和无菌中微子之间的混合。计算结果表明，预测的大质量核的丰富性确实受到中微子混合的影响。
A possible mechanism for the formation of heavy-mass elements in supernovae is the rapid neutron-capture-mechanism (r-process). It depends upon the electron-fraction $Y_e$, a quantity which is determined by beta-decay-rates. In this paper, we focus on the calculation of electroweak decay-rates in presence of massive neutrinos. The resulting expressions are then used to calculate nuclear reactions entering the rapid-neutron capture. We fix the astrophysical parameters to the case of a core-collapse supernova. The neutrino sector includes a mass scheme and mixing angles for active neutrinos, and also by including the mixing between active and sterile neutrinos. The results of the calculations show that the predicted abundances of heavy-mass nuclei are indeed affected by the neutrino mixing.
