Study for Unified Preen Models

WAN Ling-De; LU Gong-Ru; DU Dong-Sheng

Chinese Physics C> 1991, Vol. 15> Issue(6) : 510-517

Study for Unified Preen Models

Department of Physics,Henan Normal University,Xinxiang 4530021 Institute of High Energy Physics,Academia Sinica,Beijing 100039

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Abstract：
Two grand unified preon models with light quarks and leptons are presented.All these models have natural family structure at the composite level.One of them can give very low metacolor scale,Λ_MC～10⁴GeV.It is argued that the best choice for metacolor group is SU(4) and for unification group is SU(9).

References

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L. Lyons, Progress in Particle and Nuclear Physics, 10(1983), 227;W. Buchmullet, CERN preprint, CERN-TH 4189-85(1985).[2] J. M. Gipson, Y. Tosa, and R. E. Marshak; Phys. Rev., D32(1985), 284.V. Silverira and A. Zee, Phys. Lett., 157B(1985), 191;C. Q. GENG and R. E. Marshak, Phys. Rev., D32(1987), 2278;Z. Phys., C33(1987), 513.Y. Okamoto and R. E. Marshak, Phys. Lett., 162B(1985), 333.[3] H. Georgi, Nucl. Phyr., B266(1986), 274.[4] Gongru Lu, Bing-Lin Young, Xinmin Zhang and Lingde Wan, Phys, Rev., D40(1989), 223.[5] Gongru Lu, Bing-Lin Young and Xinmin Zhang, Mod. Phys. Lett. A, Vol. 5(1990), 531.[6] D. Gonzales, Phys. Lett., 129B(1983), 213.[7] S. Fajfer and D. Tadic, Phys. Rev., D35(1987), 361.[8] Du Dongsheng, Lu Gongru, Some Possible Grand Unified Preon Models with Light Quarks and Leptons.[9] G. 'tHooft, in Recent Developments in Gauge Theories, (argese 1979, eds. by G. tHooft et. al (Plenum, New York and London).[10] R. D. Pecent, The Mass Problem and the lssue of Compositeness, DESY 87-OSO, May 1987.[11] X. Li and R. E. Marshak, Nucl. Phys., B236(1986), 383.[12] Y. P. Kuang and S. H. H. Tye, Phys. Rev., D26(1982), 1718.[13] H. Georgi, Nucl. Phys., B156(1979), 126.[14] J. Steinberget, Talk given at the TeV Physics Workshop, Beijing, May 1990.[15] P. Q. Hung, Fermilab-PUB-87/156-T, Oct. 1987.

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WAN Ling-De, LU Gong-Ru and DU Dong-Sheng. Study for Unified Preen Models[J]. Chinese Physics C, 1991, 15(6): 510-517.

WAN Ling-De, LU Gong-Ru and DU Dong-Sheng. Study for Unified Preen Models[J]. Chinese Physics C, 1991, 15(6): 510-517. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study for Unified Preen Models

Corresponding author: WAN Ling-De,

Department of Physics,Henan Normal University,Xinxiang 4530021 Institute of High Energy Physics,Academia Sinica,Beijing 100039

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1991-06-05

Abstract: Two grand unified preon models with light quarks and leptons are presented.All these models have natural family structure at the composite level.One of them can give very low metacolor scale,Λ_MC～10⁴GeV.It is argued that the best choice for metacolor group is SU(4) and for unification group is SU(9).