| Low-energy limits on heavy Majorana neutrino masses from the neutrinoless double-beta decay and non-unitary neutrino mixing |
| Xing ZZ(邢志忠) ; Xing, ZZ
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| 2009
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| 发表期刊 | PHYSICS LETTERS B
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| 卷号 | 679期号:3页码:#REF! |
| 通讯作者 | Xing, ZZ (reprint author), Chinese Acad Sci, Inst High Energy Phys & Theoret Phys, Ctr Sci Facil, POB 918, Beijing 100049, Peoples R China.
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| 摘要 | In the type-1 seesaw mechanism, both the light Majorana neutrinos (nu(1), nu(2), nu(3)) and the heavy Majorana neutrinos (N(1),..., N(n)) can mediate the neutrinoless double-beta (0 nu beta beta) decay. We point out that the contribution of nu(i) to this 0 nu beta beta process is also dependent on the masses M(k) and the mixing parameters R(ek) of N(k) as a direct consequence of the exact seesaw relation, and the effective mass term of nu(i) is in most cases dominant over that of N(i). We obtain a new bound vertical bar Sigma R(ek)(2)M(k)vertical bar < 0.23 eV (or < 0.85 eV as a more conservative limit) at the 2 sigma level, which is much stronger than vertical bar Sigma R(ek)(2)M(k)(-1)vertical bar < 5 x 10(-8) GeV(-1) used in some literature, from current experimental constraints on the 0 nu beta beta decay. Taking the minimal type-1 seesaw scenario for example, we illustrate the possibility of determining or constraining two heavy Majorana neutrino masses by using more accurate low-energy data on lepton number violation and non-unitarity of neutrino mixing. (C) 2009 Elsevier B.V. All rights reserved. |
| 文章类型 | Article
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| 学科领域 | Physics
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| DOI | 10.1016/j.physletb.2009.07.040
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| 收录类别 | SCI
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| WOS类目 | Physics, Multidisciplinary
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| WOS记录号 | WOS:000269753300017
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.ihep.ac.cn/handle/311005/227226
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| 专题 | 理论物理室
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推荐引用方式
GB/T 7714 |
Xing ZZ,Xing, ZZ. Low-energy limits on heavy Majorana neutrino masses from the neutrinoless double-beta decay and non-unitary neutrino mixing[J]. PHYSICS LETTERS B,2009,679(3):#REF!.
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| APA |
邢志忠,&Xing, ZZ.(2009).Low-energy limits on heavy Majorana neutrino masses from the neutrinoless double-beta decay and non-unitary neutrino mixing.PHYSICS LETTERS B,679(3),#REF!.
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| MLA |
邢志忠,et al."Low-energy limits on heavy Majorana neutrino masses from the neutrinoless double-beta decay and non-unitary neutrino mixing".PHYSICS LETTERS B 679.3(2009):#REF!.
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