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Quantifying multinucleon effect in Argon using high-pressure TPC
Nuclear Physics B ( IF 2.8 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.nuclphysb.2020.115103
Jaydip Singh , Srishti Nagu , Jyotsna Singh , R.B. Singh

Neutrino oscillation experiments use heavy nuclear targets to achieve sufficient interaction rates. Nuclear effects are introduced in the experimental environment by the use of these targets and need to be quantified as they add to the systematic errors. In the low energy region (around 1 GeV) multinucleon events are also present along with Quasi Elastic (QE) and Delta interactions. Therefore if these multinucleon events are not incorporated in the data set properly, we end up with an inaccurate reconstruction of neutrino energy. In our work, we have illustrated the importance of incorporation of multinucleon events for the reduction of systematic errors in physics predictions by DUNE-Near Detector (ND). To achieve this we have presented the event distribution ratio of Ar/C, Ar/Ar, and C/C as a function of squared four-momentum transfer by employing different nuclear models. This analysis recommends the addition of 2p2h or multinucleon events in the event sample and promotes model with Random Phase Approximations (RPA) effect for the analysis of the event sample to overcome or reduce the systematic uncertainties.



中文翻译:

使用高压TPC量化氩气中的多核子效应

中微子振荡实验使用重核靶来达到足够的相互作用速率。通过使用这些目标,在实验环境中引入了核效应,由于它们增加了系统误差,因此需要对其进行量化。在低能量区域(约1 GeV),多核子事件也与准弹性(QE)和Delta相互作用一起出现。因此,如果这些多核子事件未正确纳入数据集中,我们最终将导致中微子能量的重建不准确。在我们的工作中,我们已经说明了将多核子事件并入对于减少DUNE-Near Detector(ND)物理预测中系统误差的重要性。为此,我们提出了Ar / C,Ar / Ar,和C / C是采用不同核模型的四动量平方平方的函数。此分析建议在事件样本中添加2p2h或多核子事件,并推广具有随机相位近似(RPA)效应的模型来分析事件样本,以克服或减少系统的不确定性。

更新日期:2020-07-13
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