CUSTODIAL SU(2) VIOLATION AND THE ORIGIN OF FERMION MASSES

Authors
BLUMHOFER A LINDNER M
Citation
A. Blumhofer et M. Lindner, CUSTODIAL SU(2) VIOLATION AND THE ORIGIN OF FERMION MASSES, Nuclear physics. B, 407(1), 1993, pp. 173-190
Citations number
23
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. B → ACNP
ISSN journal
05503213
Volume
407
Issue
1
Year of publication
1993
Pages
173 - 190
Database
ISI
SICI code
0550-3213(1993)407:1<173:CSVATO>2.0.ZU;2-O
Abstract
Custodial SU(2) breaking due to dynamical fermion masses is studied in a rather general context and it is shown how some well-known limiting cases are correctly described. The type of ''gap equation'' which can systematically lead to extra negative contributions to the so-called rho-parameter is emphasized. Furthermore, general model independent fe atures are discussed, and it is shown how electro-weak precision measu rements can be sensitive to the fermion content and/or dynamical featu res of a given theory.