Extracting nuclear form factors with coherent neutrino scattering

Extracting nuclear form factors with coherent neutrino scattering
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用相干中微子散射提取核形状因子

DOI:
10.1103/physrevd.97.113003
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发表时间:
2018-01
期刊:
影响因子:
5
通讯作者:
Tang Jian
Tang Jian
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Ciuffoli Emilio;Evslin Jarah;Fu Qiang;Tang Jian

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相干弹性中微子-核散射(CEVNS)可以用来确定核形状因子的中子部分,从而解锁核结构的内在性质。与其他此类方法相比,CEVNS既没有强相互作用效应,又没有库仑扭曲。我们建议用即将到来的加速器设备对CEVN进行精确测量,并确定对这样一个中微子探测器的相应要求。我们发现,最重要的背景来自快中子,由宇宙起源的µ子或目标站中静止的介子衰变引起。有了吨级的液体惰性气体探测器,我们不仅可以达到测量中子半径的百分比级精度,还可以澄清高阶矩对核形状因子的贡献。
Coherent elastic neutrino-nucleus scattering (CEvNS) can be used to determine the neutron part of nuclear form factors, unlocking intrinsic properties of nuclear structure. In contrast with other such methods, CEvNS is free from both strong interaction effects and Coulomb distortions. We propose precision measurements of CEvNS with an upcoming accelerator facility and determine the corresponding requirements for such a neutrino detector. We find that most significant backgrounds come from fast neutrons, induced by cosmogenic muons or from the pion decays at rest in the target station. With ton-scale liquid noble gas detectors, we will not only achieve percent level precision in the measurement of neutron radii but also clarify contributions of higher-order moments to nuclear form factors.
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