Limits on the Majorana neutrino mass and right-handed weak currents by neutrinoless double beta decay of Mo-100
Limits on the Majorana neutrino mass and right-handed weak currents by neutrinoless double beta decay of Mo-100
复制标题
Mo-100无中微子双β衰变对马约拉纳中微子质量和右旋弱流的限制
DOI：
10.1103/physrevc.63.065501
复制
发表时间：
2001
影响因子：
3.1
通讯作者：
S. Yoshida
中科院分区：
文献类型：
--
作者：
H. Ejiri;K. Fushimi;K. Hayashi;T. Kishimoto;N. Kudomi;K. Kume;H. Kuramoto;K. Matsuoka;H. Ohsumi;K. Takahisa;S. Yoshida
用改进的V方法研究了10 0Mo的无中微子双β衰变(0νββ)，得到了基态跃迁T1/2 0νββ(mν(η)和GT；5.5(10.3)×10 2 2，T1/2 0ν)和GT；4.2(8.5)×10 2 2和T1/2 0ν(λ)>的最严格的0ν(η半衰期；质量项<；mν>；和右手弱电流项<；λ>；和<；η>；分别为4.9(9.3)×1022年和90(68)%CL。利用Tomoda等人的QRPA计算中的核矩阵元素，还讨论了这些极限导致<；mν>；<；2.1(1.5)eV，<；λ>；<；3.2(2.5)×10−6和<；η>；<；2.4(1.9)×10−8和90(68)%CL极限。
Spectroscopic studies of neutrinoless double beta decays (0 ν β β) from 100 Mo were made by means of ELEGANT V. The most stringent limits on the 0 ν β β half-lives were obtained for the ground state transitions T 1/2 0 ν (m ν)> 5.5 (10.3)× 10 22, T 1/2 0 ν (λ)> 4.2 (8.5)× 10 22, and T 1/2 0 ν (η)> 4.9 (9.3)× 10 22 yr, with 90 (68)% CL, for the mass term< m ν> and for the right-handed weak current terms of< λ> and< η>, respectively. Using the nuclear matrix elements of the QRPA calculation by Tomoda et al., these limits lead to upper limits of< m ν>< 2.1 (1.5) eV,< λ>< 3.2 (2.5)× 10− 6, and< η>< 2.4 (1.9)× 10− 8 with 90 (68)% CL Limits on other terms beyond the standard theory are also discussed.