Observables in Neutrino Mass Spectroscopy Using Atoms
Observables in Neutrino Mass Spectroscopy Using Atoms
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DOI：
10.1016/j.physletb.2013.01.015
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发表时间：
2012-09
影响因子：
4.4
通讯作者：
D. N. Dinh;D. N. Dinh;S. Petcov;S. Petcov;N. Sasao;Minoru Tanaka;M. Yoshimura
中科院分区：
文献类型：
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作者：
D. N. Dinh;D. N. Dinh;S. Petcov;S. Petcov;N. Sasao;Minoru Tanaka;M. Yoshimura
处于亚稳能级的原子集体去激发到单光子加中微子对的发射模式的过程，称为中微子对辐射发射（RENP），对中微子绝对质量标度、中微子质量等级和大质量中微子的性质（狄拉克或马约拉纳）敏感。我们调查如何指示中微子质量和混合观测值可以确定从相应的连续光子光谱的测量以特定水平的Yb原子之间的过渡为例。在正常的层次结构，倒层次结构和准简并类型的中微子质谱的情况下，分析了确定大质量中微子的性质的可能性，如果中微子是马约拉纳费米子，在中微子混合矩阵中获得有关马约拉纳相的信息。我们发现，特别是，大质量中微子的性质的敏感性，关键取决于原子能级的能量差相关的RENP。
The process of collective de-excitation of atoms in a metastable level into emission mode of a single photon plus a neutrino pair, called radiative emission of neutrino pair (RENP), is sensitive to the absolute neutrino mass scale, to the neutrino mass hierarchy and to the nature (Dirac or Majorana) of massive neutrinos. We investigate how the indicated neutrino mass and mixing observables can be determined from the measurement of the corresponding continuous photon spectrum taking the example of a transition between specific levels of the Yb atom. The possibility of determining the nature of massive neutrinos and, if neutrinos are Majorana fermions, of obtaining information about the Majorana phases in the neutrino mixing matrix, is analyzed in the cases of normal hierarchical, inverted hierarchical and quasi-degenerate types of neutrino mass spectrum. We find, in particular, that the sensitivity to the nature of massive neutrinos depends critically on the atomic level energy difference relevant in the RENP.