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arXiv 2012.10500hep-ph
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FASER $ν$的中性流中微子相互作用

Neutral Current Neutrino Interactions at FASER$ν$

Ahmed Ismail, Felix Kling, Roshan Mammen Abraham

摘要:

在探测大型强子对撞机的中微子时,FASER $ν$将记录到有史以来研究过的能量最高的实验室中微子。虽然带电电流中微子散射事件可以通过离开相互作用顶点的高能轻子来清楚地识别,但中性电流相互作用更难以检测。我们探讨了FASER $ν$观测中微子中性流散射$νN \to νN$的潜力,展示了区分中微子散射事件和中性强子背景的技术,以及估计入射中微子能量的深度非弹性散射的最终状态。我们发现,在运动学可观测量上训练的深度神经网络允许测量从100 GeV到几TeV的中微子能量上的中性电流散射截面。这样的测量可以被解释为中微子非标准相互作用的探测器,它与其他测试的限制(如振荡和相干中微子-核散射)是互补的。

英文摘要:

In detecting neutrinos from the Large Hadron Collider, FASER$ν$ will record the most energetic laboratory neutrinos ever studied. While charged current neutrino scattering events can be cleanly identified by an energetic lepton exiting the interaction vertex, neutral current interactions are more difficult to detect. We explore the potential of FASER$ν$ to observe neutrino neutral current scattering $νN \to νN$, demonstrating techniques to discriminate neutrino scattering events from neutral hadron backgrounds as well as to estimate the incoming neutrino energy given the deep inelastic scattering final state. We find that deep neural networks trained on kinematic observables allow for the measurement of the neutral current scattering cross section over neutrino energies from 100 GeV to several TeV. Such a measurement can be interpreted as a probe of neutrino non-standard interactions that is complementary to limits from other tests such as oscillations and coherent neutrino-nucleus scattering.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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