论文标题
较弱的暂停和第二共振区域
Weak pion-production and the second resonance region
论文作者
论文摘要
在这项工作中，我们报告了通过中微子在核子上的分散性裂变生产的总横截面的计算。我们对旋转$ 3/2 $的中间共振状态使用一种一致的形式主义，并在不变性接触转换的不变性条件下以及使用SACHS参数化对形式的情况进行小心。此外，我们将国家纳入最高1.6 GEV的第二个共振区域，并为所有穿着的共振传播器实施不同的方法。除了$δ$（1232）外，我们还包括n $^*$（1440），n $^*$（1535）和n $^*$（1520）共振的贡献，并且表明该包含在仅考虑$δ$（1230）的情况下，对整个横截面的描述提高了整个模型的描述。还适当描述了抗神经替氏菌的结果。
In this work we report the calculation of the total cross section for pion-production by the dispersion of neutrinos on nucleons. We use a consistent formalism for the intermediate resonance states of spin $3/2$ , taking care on the conditions imposed by the invariance on contact transformations and using the Sachs parametrization for the form factors. In addition, we incorporate states in the second resonance region up to 1.6 GeV and implement different approaches for all the dressed resonance propagators. In addition to the $Δ$(1232), we include the N$^*$(1440),N$^*$(1535)and N$^*$(1520) resonance contributions, and it is shown that this inclusion improve the description of the total cross section regards a model where only the $Δ$(1230) resonance is considered. Also results for antineutrinos are properly described.
