Using Nab to determine correlations in unpolarized neutron decay

Using Nab to determine correlations in unpolarized neutron decay
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使用 Nab 确定非极化中子衰变的相关性

DOI:
10.1007/s10751-018-1538-7
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发表时间:
2019
影响因子:
--
通讯作者:
Frlež, E.
Frlež, E.
中科院分区:
--
文献类型:
--
作者:
Broussard, L. J.;Baeßler, S.;Bailey, T. L.;Birge, N.;Bowman, J. D.;Crawford, C. B.;Cude-Woods, C.;Fellers, D. E.;Fomin, N.;Frlež, E.

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NAB实验将测量弱轴向矢量和矢量耦合常数的比率λ=Ga/gV,精度为δλ/λ∼3×10− 4,并寻找Δbf< 10− 3级的Fierz项bFat。NAB探测系统使用厚的、大面积的、分段的硅探测器来非常精确地确定衰变质子的飞行时间和衰变电子的能量,并重建反中微子和电子动量之间的关联。需要对影响定时和使用该探测系统的能量重建的系统效应有很好的理解。为了探索这些效应,已经进行了一系列非现场研究,包括使用UCNA能谱仪在ΔBF< 10− 2的β衰变中寻找不太敏感的Fierz项。
The Nab experiment will measure the ratio of the weak axial-vector and vector coupling constantsλ=gA/gVwith precisionδλ/λ∼ 3 × 10− 4and search for a Fierz termbFat a level ΔbF< 10− 3. The Nab detection system uses thick, large area, segmented silicon detectors to very precisely determine the decay proton’s time of flight and the decay electron’s energy in coincidence and reconstruct the correlation between the antineutrino and electron momenta. Excellent understanding of systematic effects affecting timing and energy reconstruction using this detection system are required. To explore these effects, a series of ex situ studies have been undertaken, including a search for a Fierz term at a less sensitive level of ΔbF< 10− 2in the beta decay of45Ca using the UCNA spectrometer.
用于中子 β 衰变实验的大面积厚分段硅探测器的表征
DOI: --
发表时间: 2014
期刊:
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发表时间: 2017
期刊: Journal of Physics: Conference Series
影响因子: --
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