Low Energy 8B Solar Neutrinos with the Wideband Intelligent Trigger at Super-Kamiokande
Low Energy 8B Solar Neutrinos with the Wideband Intelligent Trigger at Super-Kamiokande
复制标题
Super-Kamiokande 的宽带智能触发器低能 8B 太阳中微子
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
M. Elnimr
中科院分区：
文献类型：
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作者：
M. Elnimr
水切伦科夫实验超级神坎德（SK）在过去的二十年中积累了约90k的太阳中微子数据样本。目前，探测器测量来自太阳8B中微子电子散射的反射电，其动能在~ 3.5 MeV以上，受到软件触发能力的限制，尽管低至2.5 MeV的电子可以重建。Super-K低能量项目的下一个前沿是目前宽带智能触发（WIT）的运行，将触发阈值推至2.5 MeV的事件重建极限。这为探索太阳中Mikheyev-Smirnov-Wolfenstein （MSW）效应的低能量边缘提供了可能性。在这项工作中，我们将对迄今为止积累的WIT数据进行初步分析，并对未来进行展望。
The water Cherenkov experiment Super-Kamiokande (SK) has accumulated a sample of ∼ 90k solar neutrino data in the past two decades. Currently, the detector measures recoil electrons from solar 8B neutrino-electron scattering above a kinetic energy of ∼ 3.5 MeV, limited by the capacity of the software trigger, although electrons as low as 2.5 MeV can be reconstructed. The next frontier for the low energy program at Super-K is the current operation of the Wideband Intelligent Trigger (WIT) to push the trigger threshold to the event reconstruction limit of 2.5 MeV. This opens up the possibility to explore the lower energy edge of the Mikheyev-Smirnov-Wolfenstein (MSW) effect in the sun. In this work we will present the prelimiary analysis of the accumlated WIT data taken so far as well as future prospects.