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arXiv 0904.1472nucl-thhep-ph
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准弹性中微子荷电流在C-12上的散射

Quasi-elastic neutrino charged-current scattering off C-12

A. V. Butkevich

摘要:

采用相对论扭曲波冲量近似和相对论光学势,计算了中微子能量在2.8GeV以下的μ子中微子在碳靶上的荷电准弹性散射.我们研究了中微子和电子的散射过程,证明了中微子和电子散射的约化排斥截面是相似的。我们还研究了核和轴向矢量质量对$Q^2$分布形状的影响。对碳靶和氧靶计算出的每(质子)中子的(反)中微子总截面的比较表明,氧靶的反中微子总截面低于碳靶。我们发现显着的核模型依赖的包容性和总截面的能量约为1 GeV。

英文摘要:

The charged-current quasi-elastic scattering of muon neutrino on a carbon target is calculated for neutrino energy up to 2.8 GeV using the relativistic distorted-wave impulse approximation with relativistic optical potential, which was earlier successfully applied to describe electron-nucleus data. We studied both neutrino and electron processes and have shown that the reduced exclusive cross section for neutrino and electron scattering are similar. We have also studied nuclear and axial vector mass effects on the shape of $Q^2$ distribution. The comparison of the (anti)neutrino total cross sections per (proton)neutron, calculated for the carbon and oxygen targets shows the cross sections for oxygen to be lower than those for carbon. We found significant nuclear model dependence of inclusive and total cross sections for energy about 1 GeV.

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