Fun with Higgsless theories

Journal Article · Sat Jan 01 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.015016· OSTI ID:20705756

Georgi, Howard ^[1]

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1. Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusettes 02138 (United States)

Motivated by recent works on 'Higgsless theories', I discuss an SU(2){sub 0}xSU(2){sup N}xU(1) gauge theory with arbitrary bifundamental (or custodial SU(2) preserving) symmetry breaking between the gauge subgroups and with ordinary matter transforming only under the U(1) and SU(2){sub 0}. When the couplings, g{sub j}, of the other SU(2)s are very large, this reproduces the standard model at the tree level. I calculate the W and Z masses and other electroweak parameters in a perturbative expansion in 1/g{sub j}{sup 2}, and give physical interpretations of the results in a mechanical analog built out of masses and springs. In the mechanical analog, it is clear that even for arbitrary patterns of symmetry breaking, it is not possible (in the perturbative regime) to raise the Higgs mass by a large factor while keeping the S parameter small.

• OSTI ID: 20705756
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
GAUGE INVARIANCE
HIGGS BOSONS
HIGGS MODEL
REST MASS
STANDARD MODEL
SU-2 GROUPS
SYMMETRY BREAKING
U-1 GROUPS
W MINUS BOSONS
W PLUS BOSONS
Z NEUTRAL BOSONS