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Is SU(2)/sub L/ x SU(2)/sub R/ x U/sub B-L/(1) a viable symmetry at low energy

Technical Report ·
OSTI ID:5911626
;

We consider the gauge groups SU(2)/sub L/ x SU(2)/sub R/ x U/sub B-L/(1) and SU(2)/sub L/ x T/sub 3R/ x U/sub B-L/(1) as alternatives to the standard model at low energies, and fit their parameters to the neutral current data. It will be shown that if present phenomenological fits to data are taken seriously, the left-right symmetric model is disfavored because it requires either too small a value of sin/sup 2/ theta/sub w/ to be consistent with grand unification or if sin/sup 2/ theta/sub w/ is chosen at a reasonable value, it then requires an imaginary mass for one of the Z boson masses. The second gauge group is consistent with data, and the best fits yield sin/sup 2/ theta/sub w/ approx. = .24 and M/sub Z/sub 1// = 85 +- 8 GeV, M/sub Z/sub 2// approx. 230 GeV.

Research Organization:
Oregon Univ., Eugene (USA). Inst. of Theoretical Science
DOE Contract Number:
AT06-76ER70004
OSTI ID:
5911626
Report Number(s):
DOE/ER/70004-324; ON: DE83015074
Country of Publication:
United States
Language:
English

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Related Subjects

645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
BASIC INTERACTIONS
BOSONS
CURRENTS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FIELD THEORIES
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LIE GROUPS
MATHEMATICAL MODELS
NEUTRAL CURRENTS
PARTICLE MODELS
POSTULATED PARTICLES
SU GROUPS
SU-2 GROUPS
SYMMETRY
SYMMETRY GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEAK INTERACTIONS
WEINBERG-SALAM GAUGE MODEL