The Relation of Family and Extra Z0 Boson Number

  • The three family fermions can not be accommolated the Grand Unified Theories(GUTs)if only one extra Z0 boson exists.The minimal GUTs with three families should include two extra Z0 bosons which belong to the different broken scales.Georg's argument on heavy Dirac fermions has been realized.These Dirac fermions should not be bizarre.Frampton's SU(9) model should be essentially same as its SU(7) model.The difficulty of the proton decay may be resolved.
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  • [1] L. S. Durkin and Paul Langacker; Phys.Lett.,166B(1986), 436;John Ellis, Paula J. Franzini.Phys.Lett., 202(1988), 417; F. Boudjema et al., Nucl. Phys B314(1989), 301, Phys. Lett., B214(1988), 151,CERN-TH-5476/89.[2] H. Georgi and S. L. Glashow, Phys. Rev. Lett., 32(1974), 438.[3] H. Georgi, Nucl. Phys., B156(1979), 123.[4] Zhong-qi Ma, Tungsheng Tu, Peiyou Xue, Xianjian Zhou, Scientia Sinica, 4(1981), 415; 5(1981), 550.[5] N. S. Baaklini, Phys. Rev., D21(1980), 1932.[6] C. W. Kim and C. Roiesnel, Phys.,Lett,93B(1980), 343.[7] P. H. Frampton, Phys. Lett. 88B(1979), 299; Phys. Rev. Lett, 43(1979), 1460.[8] P. H. Frampton, Phys. Lett., 89B(1980), 352.[9] J. Chakrabarti, M. Popovic and R. N. Mohapatra, Phys. Rev., D21(1980), 3212.[10] Tie_Zhong Li, Mod. Phys. Lett, A3(1988), 1183, Inter. Journ. of Theore. Phys., 28(1989), 169; High Energy Physics and Nuclear Physics, 12(1988), 484.[11] W. J. Marciano, in: Prov. Fourth Workshop on Grand Unification (University of Pennsyivania) ed. A. Wel-don (Birkhauser, Basel, 1983) to be published.
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LI Tie-Zhong. The Relation of Family and Extra Z0 Boson Number[J]. Chinese Physics C, 1992, 16(1): 15-21.
LI Tie-Zhong. The Relation of Family and Extra Z0 Boson Number[J]. Chinese Physics C, 1992, 16(1): 15-21. shu
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Received: 1900-01-01
Revised: 1900-01-01
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The Relation of Family and Extra Z0 Boson Number

    Corresponding author: LI Tie-Zhong,
  • Institute of High Energy Physics,Academia Sinica,Beijing 100039

Abstract: The three family fermions can not be accommolated the Grand Unified Theories(GUTs)if only one extra Z0 boson exists.The minimal GUTs with three families should include two extra Z0 bosons which belong to the different broken scales.Georg's argument on heavy Dirac fermions has been realized.These Dirac fermions should not be bizarre.Frampton's SU(9) model should be essentially same as its SU(7) model.The difficulty of the proton decay may be resolved.

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