arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1710.00295hep-exphysics.ins-det
收藏

NOvA短基线Tau中微子外观搜索

NOvA Short-Baseline Tau Neutrino Appearance Search

Rijeesh Keloth, Adam Aurisano, Alexander Sousa, Gavin S Davies, Louise Suter, Robert K Plunkett

摘要:

标准的三味中微子振荡已经被广泛的中微子实验所解释。然而,异常的结果,如电子-反中微子过剩所看到的LSND和MiniBooNE不符合三味范式。这可以解释为额外的第四味无菌中微子在一个更大的规模比现有的三味中微子。NOvA实验由两个精细分段的液体闪烁体探测器组成,它们在离轴14.6 mrad的NuMI μ子中微子束处工作。近探测器位于费米实验室园区,距离NuMI目标1公里,而远探测器位于明尼苏达州的Ash River,距离NuMI目标810公里。NOvA实验的主要目的是使用近探测器来控制系统的不确定性,以测量远探测器的电子中微子外观;然而,近探测器非常适合寻找异常的短基线振荡。这张海报将提出一种新的方法,使用卷积神经网络在近探测器上选择高纯度的tau中微子相互作用。利用这种方法,我们将给出对由于无菌中微子振荡而引起的异常短基线τ中微子出现的灵敏度。

英文摘要:

Standard three-flavor neutrino oscillations have well explained by a wide range of neutrino experiments. However, the anomalous results, such as electron-antineutrino excess seen by LSND and MiniBooNE do not fit the three-flavor paradigm. This can be explained by an additional fourth flavor sterile neutrino at a larger scale than the existing three flavor neutrinos. The NOvA experiment consists of two finely segmented, liquid scintillator detectors operating 14 .6 mrad off-axis from the NuMI muon-neutrino beam. The Near Detector is located on the Fermilab campus, 1 km from the NuMI target, while the Far Detector is located at Ash River, MN, 810 km from the NuMI target. The NOvA experiment is primarily designed to measure electron-neutrino appearance at the Far Detector using the Near Detector to control systematic uncertainties; however, the Near Detector is well suited for searching for anomalous short-baseline oscillations. This poster will present a novel method for selecting tau neutrino interactions with high purity at the Near Detector using a convolutional neural network. Using this method, the sensitivity to anomalous short-baseline tau-neutrino appearance due to sterile neutrino oscillations will be presented.

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。

↑