Neutrino-nucleus scattering reexamined: Quasielastic scattering and pion production entanglement and implications for neutrino energy reconstruction
Neutrino-nucleus scattering reexamined: Quasielastic scattering and pion production entanglement and implications for neutrino energy reconstruction
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重新审视中微子核散射：准弹性散射和π介子产生纠缠以及对中微子能量重建的影响
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发表时间：
2010
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通讯作者：
U. Mosel
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作者：
T. Leitner;U. Mosel
我们将 Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) 模型应用于与当前和未来长基线中微子实验相关的问题，并且我们特别解决了带电电流反应与中微子消失实验的相关性。正确识别带电电流准弹性 (CCQE) 事件char22{}（振荡实验中的信号通道char22{}）与中微子能量重建相关，从而与振荡结果相关。我们表明，在当今的实验中，大约 20%$ 的准弹性截面被错误识别，必须通过事件生成器进行纠正。此外，我们发现 $1{ensuremath{pi}}^{+}$ ($g$ $40%$) 事件的很大一部分被错误地识别为 CCQE 事件，这主要是由原子核中的 p 介子吸收引起的。我们还讨论了这两个数字对实验检测阈值的依赖性。我们进一步研究了终态相互作用对中微子能量重建的影响。
We apply the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) model to questions relevant to current and future long-baseline neutrino experiments, and we address in particular the relevance of charged-current reactions for neutrino-disappearance experiments. A correct identification of charged-current quasielastic (CCQE) eventschar22{}which is the signal channel in oscillation experimentschar22{}is relevant for neutrino energy reconstruction and thus for the oscillation result. We show that about $20%$ of the quasielastic cross section is misidentified in present-day experiments and has to be corrected for by means of event generators. Furthermore, we show that a significant part of $1{ensuremath{pi}}^{+}$ ($g$ $40%$) events is misidentified as CCQE events, mainly caused by pion absorption in the nucleus. We also discuss the dependence of both of these numbers on experimental detection thresholds. We further investigate the influence of final-state interactions on the neutrino energy reconstruction.