The Relation of Family and Extra Z<SUP>0</SUP> Boson Number

LI Tie-Zhong

Chinese Physics C> 1992, Vol. 16> Issue(1) : 15-21

The Relation of Family and Extra Z⁰ Boson Number

LI Tie-Zhong ^,

Institute of High Energy Physics,Academia Sinica,Beijing 100039

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Abstract：
The three family fermions can not be accommolated the Grand Unified Theories(GUT_s)if only one extra Z⁰ boson exists.The minimal GUT_s 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.

References

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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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沈阳化工大学材料科学与工程学院沈阳 110142

The Relation of Family and Extra Z⁰ Boson Number

LI Tie-Zhong ^,

Corresponding author: LI Tie-Zhong,

Institute of High Energy Physics,Academia Sinica,Beijing 100039

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1992-01-05

Abstract: The three family fermions can not be accommolated the Grand Unified Theories(GUT_s)if only one extra Z⁰ boson exists.The minimal GUT_s 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.