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Testing the realistic seesaw model with two heavy Majorana neutrinos at the CERN Large Hadron Collider
Chao W(晁伟); Chao, W; Si, ZG; Zheng, YJ; Zhou, S; Zhou S(周顺)
2010
发表期刊PHYSICS LETTERS B
卷号683期号:1页码:#REF!
通讯作者Zhou, S (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要In the conventional type-(I+II) seesaw model, the effective mass matrix of three known light neutrinos is given by M(v) = M(L) - M(D)M(R)(-1)M(D)(T) in the leading-order approximation. We propose an intriguing scenario, in which the structural cancellation condition M(D)M(R)(-1)M(D)(T) = 0 is guaranteed by the A(4) x Z(2) flavor symmetry. As a consequence, neutrino masses are mainly generated by the Higgs triplet M(v) = M(L), while the neutrino mixing matrix is non-unitary and takes on the nearly tri-bimaximal pattern. A discriminating feature of this scenario from the pure type-II seesaw model is that the lepton-number-violating signatures induced by the heavy Majorana neutrinos can be discovered at the CERN Large Hadron Collider. We calculate the total cross section of the same-sign dilepton events pp -> l(alpha)(+/-)N(i) -> l(alpha)(+/-)l(beta)(+/-)jj (for i = 1, 2 and alpha, beta = e, mu, tau), and emphasize the significant interference of the contributions from two different heavy Majorana neutrinos. The background from the standard model and the kinematic cuts used to reduce it have been considered. The possible way to distinguish between the signals from heavy Majorana neutrinos and those from doubly-charged Higgs bosons is briefly discussed. (C) 2009 Elsevier B.V. All rights reserved.
文章类型Article
学科领域Physics
DOI10.1016/j.physletb.2009.11.059
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000274129600006
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被引频次:12[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/311005/225584
专题理论物理室
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Chao W,Chao, W,Si, ZG,et al. Testing the realistic seesaw model with two heavy Majorana neutrinos at the CERN Large Hadron Collider[J]. PHYSICS LETTERS B,2010,683(1):#REF!.
APA 晁伟,Chao, W,Si, ZG,Zheng, YJ,Zhou, S,&周顺.(2010).Testing the realistic seesaw model with two heavy Majorana neutrinos at the CERN Large Hadron Collider.PHYSICS LETTERS B,683(1),#REF!.
MLA 晁伟,et al."Testing the realistic seesaw model with two heavy Majorana neutrinos at the CERN Large Hadron Collider".PHYSICS LETTERS B 683.1(2010):#REF!.
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