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Chakdar, S; Li, TJ; Nandi, S; Rai, SK; Chakdar, S (reprint author), Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA.
Top SU(5) models: Baryon and lepton number violating resonances at the LHC
发表期刊PHYSICAL REVIEW D
语种英语
关键词Gauge Symmetries 3rd Family Quark Forces Color Unity
摘要We propose minimal and renormalizable nonsupersymmetric top SU(5) models where the SU(5)(C) X SU(3)'(C) X SU(2)'(L) X U(1)'(Y) gauge symmetry is broken down to the Standard Model gauge symmetry at the TeV scale. The first two families of the Standard Model fermions are charged under SU(3)'C X SU(2)'(L) X U(1)'(Y), while the third family is charged under SU(5). In the minimal top SU(5) model, we show that the quark Cabibbo-Kobayashi-Maskawa mixing matrix can be generated via dimension-five operators, and the proton decay problem can be solved by fine-tuning the coefficients of the higher-dimensional operators at the order of 10(-4). In the renormalizable top SU(5) model, we can explain the quark Cabibbo-Kobayashi-Maskawa mixing matrix by introducing vectorlike particles, and we do not have the proton decay problem. The models give rise to leptoquark and diquark gauge bosons which violate both lepton and baryon numbers involving the third-family quarks and leptons. The current experimental limits for these particles is well below the TeV scale. We also discuss the productions and decays of these new gauge bosons, and their ensuing signals, as well as their reach at the LHC.
2013
ISSN1550-7998
卷号87期号:9页码:96002
学科领域Physics
收录类别SCI
项目资助者Natural Science Foundation of China [10821504, 11075194, 11135003]; United States Department of Energy [DE-FG03-95-Er-40917, DE-FG02-04ER41306]; Department of Atomic Energy, Government of India ; Natural Science Foundation of China [10821504, 11075194, 11135003]; United States Department of Energy [DE-FG03-95-Er-40917, DE-FG02-04ER41306]; Department of Atomic Energy, Government of India ; Natural Science Foundation of China [10821504, 11075194, 11135003]; United States Department of Energy [DE-FG03-95-Er-40917, DE-FG02-04ER41306]; Department of Atomic Energy, Government of India ; Natural Science Foundation of China [10821504, 11075194, 11135003]; United States Department of Energy [DE-FG03-95-Er-40917, DE-FG02-04ER41306]; Department of Atomic Energy, Government of India
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15368
专题理论物理所科研产出_SCI论文
通讯作者Chakdar, S (reprint author), Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA.
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Chakdar, S,Li, TJ,Nandi, S,et al. Top SU(5) models: Baryon and lepton number violating resonances at the LHC[J]. PHYSICAL REVIEW D,2013,87(9):96002.
APA Chakdar, S,Li, TJ,Nandi, S,Rai, SK,&Chakdar, S .(2013).Top SU(5) models: Baryon and lepton number violating resonances at the LHC.PHYSICAL REVIEW D,87(9),96002.
MLA Chakdar, S,et al."Top SU(5) models: Baryon and lepton number violating resonances at the LHC".PHYSICAL REVIEW D 87.9(2013):96002.
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