Electroweak symmetry breaking by vectorlike fermion condensation with small {ital S} and {ital T} parameters
Abstract
In order to build realistic models in which electroweak symmetry is dynamically broken we should explain the smallness of the PeskinTakeuchi {ital S} and {ital T} parameters. In accordance with the decoupling theorem, these parameters must be suppressed by SU(2){sub {ital L}}{times}U(1){sub {ital Y}} invariant masses. From this fact we can expect that if fermions with large SU(2){sub {ital L}}{times}U(1){sub {ital Y}} invariant masses undergo condensation and break electroweak symmetry, the {ital S} and {ital T} parameters can be small. It is intersting that not only the {ital S} but also the {ital T} parameter can become small even if there exists a large isospin violation in fermion condensation. In this paper we examine the possibility that, by the strong fourFermi interaction, massive vectorlike fields undergo condensation and break electroweak symmetry. The model becomes almost the same as the standard model at a low energy scale and predicts a heavy Higgs boson. Moreover, we discuss a model in which the fourFermi interaction can be induced by massive gauge boson exchange. In this model, the masses of ordinary matter fermions (quark and lepton) are enhanced.
 Authors:

 Department of Physics, Tohoku University, Sendai 980 (Japan)
 Publication Date:
 OSTI Identifier:
 76540
 Resource Type:
 Journal Article
 Journal Name:
 Physical Review, D
 Additional Journal Information:
 Journal Volume: 52; Journal Issue: 3; Other Information: PBD: 1 Aug 1995
 Country of Publication:
 United States
 Language:
 English
 Subject:
 66 PHYSICS; WEAK INTERACTIONS; SYMMETRY BREAKING; ELECTROMAGNETIC INTERACTIONS; FERMIONS; CONDENSATES; SU2 GROUPS; U1 GROUPS; MASS; ISOSPIN; HIGGS BOSONS
Citation Formats
Maekawa, N. Electroweak symmetry breaking by vectorlike fermion condensation with small {ital S} and {ital T} parameters. United States: N. p., 1995.
Web. doi:10.1103/PhysRevD.52.1684.
Maekawa, N. Electroweak symmetry breaking by vectorlike fermion condensation with small {ital S} and {ital T} parameters. United States. doi:10.1103/PhysRevD.52.1684.
Maekawa, N. Tue .
"Electroweak symmetry breaking by vectorlike fermion condensation with small {ital S} and {ital T} parameters". United States. doi:10.1103/PhysRevD.52.1684.
@article{osti_76540,
title = {Electroweak symmetry breaking by vectorlike fermion condensation with small {ital S} and {ital T} parameters},
author = {Maekawa, N},
abstractNote = {In order to build realistic models in which electroweak symmetry is dynamically broken we should explain the smallness of the PeskinTakeuchi {ital S} and {ital T} parameters. In accordance with the decoupling theorem, these parameters must be suppressed by SU(2){sub {ital L}}{times}U(1){sub {ital Y}} invariant masses. From this fact we can expect that if fermions with large SU(2){sub {ital L}}{times}U(1){sub {ital Y}} invariant masses undergo condensation and break electroweak symmetry, the {ital S} and {ital T} parameters can be small. It is intersting that not only the {ital S} but also the {ital T} parameter can become small even if there exists a large isospin violation in fermion condensation. In this paper we examine the possibility that, by the strong fourFermi interaction, massive vectorlike fields undergo condensation and break electroweak symmetry. The model becomes almost the same as the standard model at a low energy scale and predicts a heavy Higgs boson. Moreover, we discuss a model in which the fourFermi interaction can be induced by massive gauge boson exchange. In this model, the masses of ordinary matter fermions (quark and lepton) are enhanced.},
doi = {10.1103/PhysRevD.52.1684},
journal = {Physical Review, D},
number = 3,
volume = 52,
place = {United States},
year = {1995},
month = {8}
}