Abstract
It is shown that the experimental value of sin2 θw can be obtained if theZ is a bound state of two haplons provided that the haplons carry a new hypercolour quantum number in addition to colour. This approach also leads to the prediction that the electromagnetic couplings of theZ are substantially larger than they are in standard electroweak theory. It may be possible to observe these anomalous couplings in the processe + e −→Zγ at LEP 200 where theZ is longitudinally polarised.
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P.T. Matthews, A. Salam: Rev. Mod. Phys. 23 (1951) 311
J. Hamilton, W.S. Woolcock: Rev. Mod. Phys. 35 (1963) 737
G.F. Chew, M.L. Goldberger, F.E. Low, Y. Nambu: Phys. Rev. 106 (1957) 1337
F.E. Low: Phys. Rev. 96 (1954) 1428; M. Gell-Mann, M.L. Goldberger: Phys. Rev. 96 (1954) 1433
J. Steinberger: Phys. Rev. 76 (1949) 1180
R.P. Feynman, M. Gell-Mann: Phys. Rev. 109 (1958) 193
S.A. Bludman: Nuovo Cimento 9 (1958) 433
G. 'tHooft: Nucl. Phys. B 35 (1971) 167
S.L. Glashow: Nucl. Phys. 22 (1961) 579
S. Weinberg: Phys. Rev. Lett. 19 (1967) 1264; see also A. Salam: Elementary particle theory. N. Svartholm (ed.), p. 367. Stockholm: Almquist and Wiskell and G. 'tHooft: op. cit.
N. Dombey: Surv. High Energy Phys. 3 (1982) 1
O.W. Greenberg, J. Sucher: Phys. Lett. 99 B (1981) 339; L. Abbott, E. Farhi: Phys. Lett. 101B (1981) 69; H. fritzsch, G. Mandelbaum: Phys. Lett. 102B (1981) 319
J.J. Sakurai: Currents and mesons. Chicago: University of Chicago Press 1969
F. Boudjema; Aspects of the Z boson. D. Phil. dissertation submitted to the University of Sussex, 1987
H. Fritzsch, P. Minkowski: Nucl. Phys. B 103 (1976) 61
P. Mohapatra, D.P. Sidhu: Phys. Rev. Lett. 38 (1977) 667
E. Cohen, J. Ellis, K. Enqvist, D.V. Nanopoulos: Phys. Lett. B 161 (1985) 76
W.R. Frazer, J. Fulco: Phys. Rev. Lett. 2 (1959) 365
J.J. Sakurai: Ann. Phys. (N.Y.) 11 (1960) 1
S. Okubo: Phys. Rev. 179 (1969) 1629
A. Bramon, E. Masso: Phys. Lett. 104B (1981) 311
R. Tarrach: Z. Phys. C—Particles and Fields 2 (1979) 221; M. Scadron: Rep. Prog. Phys. 44 (1981) 213
F. Gursey, L.A. Radicati: Phys. Rev. Lett. 13 (1964) 175; A. Pais: Phys. Rev. Lett. 13 (1964) 175
M. Perrottet: Cours donne a la 17eme Ecole d'Ete des Particules (Ecole de Gif-sur-Yvette) Clermont-Ferrand, September 1985. CPT-85/P1847, Centre de Physique Theorique. Marseille
P.Q. Hung, J.J. Sakurai: Nucl. Phys. B 143 (1978) 81
J.D. Bjorken: Phys. Rev. D 19 (1979) 335
D. Schildknecht: Weak interactions and neutrinos. A. Morales (ed.), p. 407. Singapore: World Scientific 1983
P. Chen, J.J. Sakurai: Phys. Lett. 110 B (1982) 481
H. Fritszch, Mandelbaum: Phys. Lett. 109 B (1982) 224
G. Altarelli: Proceedings of the XXIII International Conference on High Energy Physics, Berkeley S.C. Loken (ed), Vol. 1, p. 119. Singaporc: World Scientific 1987
A. Barroso, F. Boudjema J. Cole N. Dombey: Z. Phys. C—Particles and Fields 28 (1985) 149
Y. Zeldovich: Sov. Phys. JETP, 6 (1958) 1184
O.W. Greenberg, J. Sucher: op. cit.
F. Boudjema, J. Cole, N. Dombey: RadiativeZ production at LEP, to be published in the Yellow Book on LEP 200, CERN, Geneva 1987; see also [30]
F. Boudjema J. Cole, N. Dombey: Phys. Lett. 177 B (1986) 197
F. Renard: Basics of electron-positron collisions. Paris: Edition Frontieres 1981
K. Hagiwara, R.D. Peccei, D. Zeppenfeld, K. Hikasa: Nucl. Phys. B 282 (1987) 253
B.J. Read, N. Dombey: J. Phys. G 3 (1977) 1659
G. Leibbrandt. Rev. Mod. Phys. 47 (1975) 849
This procedure is similar to that of W. Pauli, F. Villars: Rev. Mod. Phys. 21 (1949) 434
M. Veltman: Proceedings of HEP 83, Brighton; p. 880. Rutherford Appleton Laboratory, 1983
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Boudjema, F., Dombey, N. An effective theory of a compositeZ . Z. Phys. C - Particles and Fields 35, 499–510 (1987). https://doi.org/10.1007/BF01596902
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DOI: https://doi.org/10.1007/BF01596902