Summary
From ‘vertical’ preons V with SU5 V-5, ‘horizontal’ preons H with SU5 H -5 and « techni »-preons T withSU 5 T- 5, where eachSU 5 gauge group is broken asSU 5 → SU3 xSU 2 X U1 at λGUT ~ 1015 GeV, we obtain a set of massless composite fermions which satisfies ’t Hooft’s anomaly matching conditions at an energy scale λHC ~ 106 GeV, where SU3XSU3XSU ″3 ]-hypercolours become strong. Then, at λSTC ~ 104 GeV, where [SU 2XSU ′2 ]- supertechnicolours become strong, we obtain quarks and leptons fL = (5 + 10, 3, 1)L and technifermions FR = (5 + 10, 1, 3)R of SU5,VXSU3,HXSU3,TC as three-preon states (VHH) + (VVH) and (VTT) + (VVT), respectively. TechnicolourSU 3,TC is broken intoSO 3,TC at λSTC and it becomes strong at λTC ~ 102 GeV. The condensate of the technifermionsF R, < F CL FR>, provides reasonable quark and lepton masses.
Riassunto
Dai preoni « verticali » V conSU 5 V-5, i preoni « orizzontali » H conSU 5,H-5 e tecnipreoni T conSU 5,T-5, dove ogni gruppo di gaugeSU 5 si rompe inSU 3 XSU 2 X U1 per λGUT ~ 1015 GeV, si ottiene un insieme di fermioni composti privi di massa che soddisfa le condizioni di adattamento dell’anomalia di ’t Hooft ad una scala d’energia λHC ~ ~ 106 GeV, dove gli ipercolori [SU 3 XSU ′3 XSU ″3 ] diventano forti. Allora, per λSTC~ ~ 104 GeV, dove i supertecnicolori [SU 2 XSU ′2 ] diventano forti, otteniamo quark e leptoni fL= (5+ 10, 3, 1)L e tecnifermioni FR= (5+ 10, 1, 3)R diSU 5,V XSU 3,H XSU 3,TC come stati a tre preoni (VHH) + (VVH) e (VTT) + (VTT), rispettivamente. II tecnicolore diSU 3,TC si rompe inSO 3,TC per λSTC e diventa forte per λTC ~ 102 GeV. II condensate di teonifermioniF R, <F CL FR> fornisce accettabili masse dei quark e dei leptoni.
Similar content being viewed by others
References
H. Geoegi andS. L. Glashow:Phys. Rev. Lett.,32, 438 (1974).
Y. Koide:Lett. Nuovo Cimento,43, 97 (1985).
Y. Koide:Lett. Nuovo Cimento,44, 149 (1985);Nuovo Cimento A,91, 181 (1986).
K. Akama andH. Terazawa: University of Tokyo, report No. 257 (1976) (unpub- lished);T. Maehaea andT. Yanagida:Prog. Theor. Phys.,60, 822 (1978);F. Wilczek andA. Zee:Phys. Rev. Lett.,42, 421 (1979);A. Davidson, M. Koca andK. C. Wali:Phys. Rev. D,20, 1195 (1979);J. Chakrabarti:Phys. Rev. D,20, 2411 (1979).
E. Cazalbuoni andE. Catto:Phys. Lett. B,93, 47 (1980).
Y. Tosa andE. E. Marshak:Phys. Rev. D,27, 616 (1983).
S. Weinberg andE. Witten:Phys. Lett. B,96, 59 (1980);T. Kugo:Phys. Lett. B,109, 205 (1982).
MARK J Collaboration:Phys. Lett. B,152, 439 (1985). For recent report on the search for heavy quarks, see,e.g., JADE Collaboration:Phys. Lett. B,160, 337 (1985).
S. Dimopulos andL. Susskind:Nucl. Phys. B,155, 237 (1979);E. Eichten andK. D. Lane:Phys. Lett. B,90, 125 (1980). Also see, for techni- preons,e.g., C. H. Albright, B. Schrempp and F. Schrempp:Phys. Rev. D,26, 1737 (1982);K. Yamawaki andT. Yokota:Phys. Lett. B,113, 293 (1982);Nucl. Phys. B,223, 144 (1983).
For example,H. Georgi:Nucl. Phys. B,156, 126 (1977).
Gr. ’T Hooft: inRecent Developments in Gauge Theories, Proceedings of the NATOAdvanced Study Institute, Cargèse, 1979, edited by G. ’T Hooftet al.(Plenum Press, New York, N. T., 1980).
H. Georgi andJ. Preskill:Phys. Lett. B,156, 369 (1985).
S. Raby, S. Dimopoulos andL. Susskind:Nucl. Phys. B,219, 373 (1980).
B. Holdom:Phys. Rev. D,24, 1441 (1981). Also see, for application to composite models,e.g., K. Yamawaki and T. Yokota:Phys. Lett. B,113, 293 (1982);Nucl. Phys. B,223, 144 (1983);C. H. Albright:Phys. Rev. D,29, 2595 (1984).
R. D. Peccei andH. E. Quinn:Phys. Rev. Lett.,38, 1440 (1977);Phys. Rev. D,16, 1701 (1977);S. Weinberg:Phys. Rev. Lett.,40, 233 (1978);F. Wilczek:Phys. Rev. Lett.,40, 279 (1978).
For example, Mark J Collaboration (B. Adeva et al.):Phys. Rev. Lett.,54, 1750 (1985).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Koide, Y. Preon model with three SU3 hypercolours and three SU5 hyperflavours. Nuov Cim A 95, 160–172 (1986). https://doi.org/10.1007/BF02903039
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02903039