Impact of final state interactions on neutrino-nucleon pion production cross sections extracted from neutrino-deuteron reaction data
Impact of final state interactions on neutrino-nucleon pion production cross sections extracted from neutrino-deuteron reaction data
复制标题
最终态相互作用对从中微子-氘核反应数据中提取的中微子-核子π介子产生截面的影响
DOI：
10.1103/physrevd.99.031301
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发表时间：
2019
影响因子：
5
通讯作者：
Sato T.
中科院分区：
文献类型：
--
作者：
Nakamura S.X.;Kamano H.;Sato T.
当前和不久的将来的中微子振荡实验需要显着改进的中微子核反应模型。中微子核π介子产生数据对于验证此类中微子核模型中的相应基本振幅起着至关重要的作用。因此，从带电中微子-氘核反应数据 () 中提取的当前可用数据必须针对费米运动和终态相互作用 (FSI) 等核效应进行校正。我们使用包括脉冲机制在内的理论模型进行研究，并辅以 FSI 和再散射。对观察者动量分布的分析表明，FSI 效应显着减少了准自由峰区域的光谱，并导致使用数据提取基本过程信息的有用方法，同时考虑了重要的 FSI 校正。我们通过校正 FSI 和费米运动的氘气泡室数据来提供总横截面。这些结果将为近期中微子振荡实验的中微子核反应模型带来重大改进。
The current and near-future neutrino-oscillation experiments require significantly improved neutrino-nucleus reaction models. Neutrino-nucleon pion production data play a crucial role to validate corresponding elementary amplitudes that go into such neutrino-nucleus models. Thus, the currently available data extracted from charged-current neutrino-deuteron reaction data () must be corrected for nuclear effects such as the Fermi motion and final state interactions (FSI). We studywith a theoretical model including the impulse mechanism supplemented by FSI fromandrescatterings. An analysis of the spectator momentum distributions reveals that the FSI effects significantly reduce the spectra over the quasifree peak region and leads to a useful recipe to extract information of elementaryprocesses usingdata, with the important FSI corrections taken into account. We providetotal cross sections by correcting the deuterium bubble chamber data for the FSI and Fermi motion. The results will bring a significant improvement on neutrino-nucleus reaction models for the near-future neutrino-oscillation experiments.