The neutrino mass hierarchy at reactor experiments now that theta(13) is large
Ciuffoli, E; Evslin, J; Zhang XM(张新民); Zhang, XM
刊名JOURNAL OF HIGH ENERGY PHYSICS
2013
期号3页码:16
关键词Neutrino Detectors and Telescopes
学科分类Physics
DOI10.1007/JHEP03(2013)016
英文摘要Now that theta(13) is known to be large, a medium baseline reactor experiment can observe the fine structure of the electron antineutrino survival probability curve, approximately periodic oscillations in L/E with period 4 pi/vertical bar Delta M-31(2)vertical bar. The periodicity with respect to L/E is broken by 2-3 oscillations which, in the case of the normal (inverted) hierarchy, shift the first 16 oscillations nearly 1% higher (lower) and move the next 16 lower (higher). The energy of each peak determines a particular combination of the mass differences, for example cos(2)(theta(12))vertical bar Delta M-31(2)vertical bar + sin(2)(theta(12))vertical bar Delta M-32(2)vertical bar for all peaks visible at baselines under 40 km. Comparing these combinations with each other or with NO nu A results one can in principle determine the mass hierarchy. Alternately, as the Fourier transforms of the 1-3 and 2-3 oscillation probabilities are out of phase by the 1-2 oscillation probability, near the maximum of the 1-2 oscillation the complex phase of the total survival probability can be used to determine the hierarchy. Two interference effects make this task difficult. First, kilometer distances between the reactors reduce the amplitudes of peaks below about 4MeV. Second, even reactors 100 or more kilometers away significantly obscure the 1-2 oscillation maximum, which also complicates a measurement of the solar mixing angle with a single detector.
收录类别SCI
WOS记录号WOS:000317521200016
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224383
专题中国科学院高能物理研究所_理论物理室_期刊论文
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Ciuffoli, E,Evslin, J,Zhang XM,et al. The neutrino mass hierarchy at reactor experiments now that theta(13) is large[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(3):16.
APA Ciuffoli, E,Evslin, J,张新民,&Zhang, XM.(2013).The neutrino mass hierarchy at reactor experiments now that theta(13) is large.JOURNAL OF HIGH ENERGY PHYSICS(3),16.
MLA Ciuffoli, E,et al."The neutrino mass hierarchy at reactor experiments now that theta(13) is large".JOURNAL OF HIGH ENERGY PHYSICS .3(2013):16.
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