Experimental conditions for determination of the neutrino mass hierarchy with reactor antineutrinos

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• 作者：Myoung Youl Pac ^{pac@dsu.kr" class="auth_mail" title="E-mail the corresponding author}
• 刊名：Nuclear Physics B
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：902
• 期：Complete
• 页码：326-338
• 全文大小：652 K

文摘

This article reports the optimized experimental requirements to determine neutrino mass hierarchy using electron antineutrinos (${\overline{\nu }}_e$) generated in a nuclear reactor. The features of the neutrino mass hierarchy can be extracted from the $|\mathrm{\Delta }{m}_{31}^2|$ and $|\mathrm{\Delta }{m}_{32}^2|$ oscillations by applying the Fourier sine and cosine transforms to the dfb24ec792e03368ef72aec60" title="Click to view the MathML source">L/E$L/E$ spectrum. To determine the neutrino mass hierarchy above 90% probability, the requirements on the energy resolution as a function of the baseline are studied at sin²⁡2θ₁₃=0.1${\sin }^{2}2{\theta }_{13}=0.1$. If the energy resolution of the neutrino detector is less than $0.04/\sqrt{E_{\nu }}$ and the determination probability obtained from Bayes' theorem is above 90%, the detector needs to be located around 48–53 km from the reactor(s) to measure the energy spectrum of ${\overline{\nu }}_e$. These results will be helpful for setting up an experiment to determine the neutrino mass hierarchy, which is an important problem in neutrino physics.