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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
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordGauge Symmetries 3rd Family Quark Forces Color Unity
AbstractWe 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
Volume87Issue:9Pages:96002
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNatural 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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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15368
Collection理论物理所科研产出_SCI论文
Corresponding AuthorChakdar, S (reprint author), Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA.
Recommended Citation
GB/T 7714
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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