Mass Enhancement and Critical Behavior in Technicolor Theories

By Thomas Appelquist, John Terning (Yale U.). Talk presented by John Terning at Particles & Fields 91: Meeting of the Division of Particles & Fields of the APS Vancouver, Canada, 18-22 Aug 1991.

Quark and lepton masses in technicolor theories can be enhanced if the high energy, extended technicolor (ETC) interactions play an important role in electroweak symmetry breaking. This happens when the ETC coupling and the technicolor gauge coupling at high energies lie close to a certain critical line. The enhancement has been associated with the existence of composite scalars made mainly of technifermions, with masses small compared to the ETC scale. The initial study of these states was carried out with the technicolor gauge coupling neglected. In this paper we investigate the properties of such scalars including the technicolor gauge interactions. We find that for realistic values of the gauge coupling, the scalars will not be narrow resonances.

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