arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1809.08752hep-phhep-exnucl-exnucl-thphysics.ins-det
收藏

中微子-氢测量的一种新方法

A Novel Approach to Neutrino-Hydrogen Measurements

H. Duyang, B. Guo, S. R. Mishra, R. Petti

AI总结:

本文提出通过石墨与聚丙烯靶相减并结合运动学选择,在现代中微子束流中实现高纯度、大统计量的(反)中微子-氢测量,以精确确定通量并约束核效应。

摘要:

现有(反)中微子-氢(H)相互作用数据的统计量有限,长期以来一直是高能中微子物理学的障碍。我们讨论了一种实现精确(反)中微子-氢测量的实用方法,以解决早期实验的主要局限性。氢上的相互作用是通过在高细分低密度探测器中,从薄的专用石墨(纯C)和聚丙烯(CH$_2$)靶的测量结果中相减来提取的。在相减之前,使用运动学选择将纯度提高到80-95%。在现代中微子束流中,对于各种$ν(\bar ν)$-H事件拓扑,可以现实地实现${\cal O}(10^6)$量级的统计量。获得此类样本将能够精确确定中微子和反中微子通量,并通过与同一探测器内重材料上的相应测量结果进行比较来直接约束核效应。(反)中微子通量和核模糊效应通常是长基线振荡实验中系统不确定性的主要来源。(反)中微子-氢相互作用也为基本相互作用的广泛精密测试提供了理想工具。

英文摘要:

The limited statistics of the available (anti)neutrino-hydrogen (H) interactions has been a longstanding impediment for high-energy neutrino physics. We discuss a practical way to achieve accurate (anti)neutrino-hydrogen measurements, addressing the principal limitations of earlier experiments. Interactions on hydrogen are extracted by subtracting measurements on thin dedicated graphite (pure C) and polypropylene (CH$_2$) targets within a highly segmented low-density detector. A kinematic selection is used to increase the purities to 80-95\% before subtraction. A statistics of ${\cal O}(10^6)$ can be realistically achieved in modern neutrino beams for the various $ν(\bar ν)$-H event topologies. The availability of such samples would allow a precise determination of neutrino and antineutrino fluxes, as well as to directly constrain nuclear effects from a comparison with corresponding measurements on heavy materials within the same detector. The (anti)neutrino fluxes and the nuclear smearing are typically the leading sources of systematic uncertainties in long-baseline oscillation experiments. (Anti)neutrino-hydrogen interactions also provide an ideal tool for a wide range of precision tests of fundamental interactions.

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。

↑