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Compromise between neutrino masses and collider signatures in the type-II seesaw model
Chao W(晁伟); Luo S(罗舒); Xing ZZ(邢志忠); Zhou S(周顺); Chao, W; Luo, S; Xing, ZZ; Zhou, S
2008
发表期刊PHYSICAL REVIEW D
卷号77期号:1页码:16001
通讯作者[Chao, Wei ; Luo, Shu ; Xing, Zhi-zhong ; Zhou, Shun] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
摘要A natural extension of the standard SU(2)(L) x U(1)(Y) gauge model to accommodate massive neutrinos is to introduce one Higgs triplet and three right-handed Majorana neutrinos, leading to a 6 x 6 neutrino mass matrix which contains three 3 x 3 submatrices, M-L, M-D and M-R. We show that three light Majorana neutrinos (i.e., the mass eigenstates of nu(e), nu(mu), and nu(tau)) are exactly massless in this model, if and only if M-L=(MDMR-1MDT) exactly holds. This no-go theorem implies that small but nonvanishing neutrino masses may result from a significant but incomplete cancellation between M-L and (MDMR-1MDT) terms in the Type-II seesaw formula, provided three right-handed Majorana neutrinos are of O(1) TeV and experimentally detectable at the LHC. We propose three simple Type-II seesaw scenarios with the Lambda(4) x U(1)(X) flavor symmetry and its explicit breaking to interpret the observed neutrino mass spectrum and neutrino mixing pattern. Such a TeV-scale neutrino model can be tested in two complementary ways: (1) searching for possible collider signatures of lepton number violation induced by the right-handed Majorana neutrinos and doubly-charged Higgs particles; and (2) searching for possible consequences of unitarity violation of the 3 x 3 neutrino mixing matrix in the future long-baseline neutrino oscillation experiments.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.77.016001
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000252863700097
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被引频次:30[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/311005/240471
专题理论物理室
作者单位中国科学院高能物理研究所
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Chao W,Luo S,Xing ZZ,et al. Compromise between neutrino masses and collider signatures in the type-II seesaw model[J]. PHYSICAL REVIEW D,2008,77(1):16001.
APA 晁伟.,罗舒.,邢志忠.,周顺.,Chao, W.,...&Zhou, S.(2008).Compromise between neutrino masses and collider signatures in the type-II seesaw model.PHYSICAL REVIEW D,77(1),16001.
MLA 晁伟,et al."Compromise between neutrino masses and collider signatures in the type-II seesaw model".PHYSICAL REVIEW D 77.1(2008):16001.
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