Abstract
In the previous chapters we have emphasized that while the success of the SU(2) L × U(1) Y × SU(3) C model has indicated that the unified gauge theories are perhaps the right theoretical framework for the study of quark-lepton interactions, it still leaves a lot of questions unanswered. Some of the outstanding questions are:
-
(a)
the nature of the Higgs bosons and the origin of electro-weak symmetry breaking;
-
(b)
the apparent superfluous replication of quarks and lepton (and even Higgs bosons if electro-weak symmetry is higher); and
-
(c)
the origin of fermion masses which are much smaller than the scale of electro-weak symmetry breaking: for instance, m e,u,d ~ 10−5 Λ W .
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
L. Susskind, Phys. Rev. D20, 2619 (1979); S. Weinberg, Phys. Rev. D19, 1277 (1979).
E. Fahri and L. Susskind, Phys. Rev. D20, 3404 (1979); S. Dimopoulos, Nucl. Phys. B169, 69 (1980).
S. Simopoulos and L. Susskind, Nucl. Phys. B155, 237 (1979); E. Eichten and K. Lane, Phys. Lett. 90B, 125 (1980).
S. Dimopoulos and J. Ellis, Nucl. Phys. B182, 505 (1981).
J. C. Pati, in Superstrings, Compositeness and Cosmology (edited by S. Gates and R. N. Mohapatra ), World Scientific, Singapore, 1987, p. 462;
J. Calmet, S. Narison, M. Perrottet, and E. DeRafael, Rev. Mod. Phys. 49, 21 (1977); T. Kinoshita and W. B. Lindquist, Phys. Rev. Lett. 41, 1573 (1981); T. Kinoshita, B. Nizic, and Y. Okamoto, Phys. Rev. Lett. 53, 717 (1984).
R. Barbieri, L. Maiani, and R. Petronzio, Phys. Lett. 96B, 63 (1980); S. J. Brodsky and S. D. Drell, Phys. Rev. D22, 2236 (1980).
See, for instance, models of O. W. Greenberg and J. Sucher, Phys. Lett. 99B, 339 (1981); J. C. Pati and A. Salam, Phys. Rev. D10, 275 (1974); R. Barbieri, R. N. Mohapatra, and A. Masiero, Phys. Lett. 105B, 369 (1981).
O. W. Greenberg, R. N. Mohapatra, and M. Yasue, Phys. Rev. Lett. 51, 1737 (1983).
E. J. Eichten, K. D. Lane, and M. E. Peshkin, Phys. Rev. Lett. 50, 811 (1983).
These bounds have been discussed in composite model framework by I. Bars, Nucl. Phys. B198, 269 (1982); and for a recent discussion of the conditions under which these bounds may be evaded, see O. W. Greenberg, R. N. Mohapatra, and S. Nussinov, Phys. Lett. 148B, 465 (1984).
B. Weinstein, in TSIMESS Workshop Proceedings, 1983 (edited by T. Goldman et al.), American Institute of Physics, New York, 1983.
G. ‘t Hooft, in Recent Developments in Gauge Theories, Plenum, New York, 1980, p. 135.
S. L. Alder, Phys. Rev. 177, 2426 (1969); R. Jackiw and J. S. Bell, Nuovo Cimeno, 60A, 47 (1969); S. L. Alder and W. Bardeen, Phys. Rev. 182, 1517 (1969).
Y. Frishman, A. Schwimmer, T. Banks, and S. Yankielowicz, Nucl. Phys. B177, 157 (1981).
J. C. Pati and A. Salam, Phys. Rev. D10, 275 (1974).
J. C. Pati, O. W. Greenberg, and J. Sucher (Ref. [8]).
T. Applequist and J. Carrazone, Phys. Rev. D11, 2856 (1975).
J. Preskill and S. Weinberg, Texas preprint, 1981.
D. Weingarten, Phys. Rev. Lett. 51, 1830 (1983); E. Witten, Phys. Rev. Lett. 51, 2351 (1983); S. Nussinov, Phys. Rev. Lett. 51, 2081 (1983).
They are analogous to the massless Goldstone—Majoron boson suggested by Y. Chikashige, R. N. Mohapatra, and R. D. Peccei, Phys. Lett. 98B, 265 (1981).
For an apparent exception to this argument see an E(6) hypercolor model by Y. Tosa, J. Gibson, and R. E. Marshak, Private communication, 1984.
S. Weinberg and E. Witten, Phys. Lett. 96B, 59 (1980); See also E. C.G. Sudarshan, Phys. Rev. D (1981).
D. A. Dicus, E. Kolb, V. Teplitz, and R. Wagoner, Phys. Rev. D17, 1529 (1978); M. Fukugita, S. Watamura, and M. Yoshimura, Phys. Rev. Lett. 48, 1522 (1982).
L. Abbott and E. Farhi, Phys. Lett. 1O1B, 69 (1981); H. Fritzsch and G. Mandelbaum, Phys. Lett. 102B, 319 (1981); R. Barbieri, R. N. Mohapatra, and A. Masiero, Phys. Lett. 105B, 369 (1981); For a review see R. N. Mohapatra, Proceedings of the Telemark Neutrino Mass Mini-Conference, 1982, American Institute of Physics, New York, 1982.
J. D. Bjorken, Phys. Rev. D19, 335 (1979); P. Q. Hung and J. J. Sakurai, Nucl. Phys. B143, 81 (1978).
R. Barbieri and R. N. Mohapatra, Phys. Lett. 120B, 195 (1982).
D. Schildknecht, in Proceedings of the Europhysics Study Conference on Electroweak Effects at High Energies (edited by H. Newman ), Plenum, New York, 1983.
U. Baur, H. Fritzsch, and H. Faissner, Phys. Lett. 135B, 313 (1984).
A. Masiero, R. N. Mohapatra, and R. D. Peccei, Nucl. Phys. B192, 66 (1981).
A. Masiero and R. N. Mohapatra, Phys. Lett. 103B, 343 (1981).
Y. Nambu, 1988 International Workshop on New Trends in Strongly Coupled Gauge Theories (edited by M. Bando et al.), World Scientific, Singapore, 1989, P. 3.
V. Miransky, M. Tanabashi, and K. Yamawaki, Phys. Lett. B221 177 (1989).
W. Bardeen, C. Hill, and M. Lindner, Phys. Rev. D41, 1647 (1990).
B. Pendleton and G. G. Ross, Phys. Lett. 98B 291 (1981); C. Hill, Phys. Rev. D24, 691 (1981); C. Hill, C. Leung, and S. Rao, Nucl. Phys. B262, 517 (1985).
M. Luty, Phys. Rev. D41 2893 (1990); M. Suzuki, Phys. Rev. D41 3457 (1990).
T. Clark, S. Love, and W. Bardeen, Phys. Lett. B237, 235 (1990).
K. S. Babu and R. N. Mohapatra, Phys. Rev. Lett. 66 556 (1991).
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 1992 Springer Science+Business Media New York
About this chapter
Cite this chapter
Mohapatra, R.N. (1992). Technicolor and Compositeness. In: Unification and Supersymmetry. Graduate Texts in Contemporary Physics. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-4373-9_8
Download citation
DOI: https://doi.org/10.1007/978-1-4757-4373-9_8
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4757-4375-3
Online ISBN: 978-1-4757-4373-9
eBook Packages: Springer Book Archive