R-symmetry in MSSM and beyond

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56595· OSTI ID:307148

Shafi, Q ^[1]

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1. Bartol Research Institute, University of Delaware, Newark, Delaware 19716 (United States)

This talk explores the role that U(1) (or some discrete) R-symmetries can play in the construction of realistic supersymmetric models. By exploiting U(1){sub R}, the first part attempts to obtain a more robust version of MSSM in which neutrinos are massive and the resolution of the {mu} and strong CP problems is intimately related. The second part goes beyond the MSSM gauge group by considering SU(3){sub c}{times}SU(2){sub L}{times}SU(2){sub R}{times}U(1){sub B{minus}L}, supplemented by U(1){sub R}. The parameter tan&hthinsp;{beta}{approx_equal}m{sub t}/m{sub b}, which allows one to predict the top quark mass in the right ball park, and also explain why the {open_quote}standard model{close_quote} higgs h{degree} has so far not been found at LEPII. Its tree level mass is M{sub Z{degree}} and, after radiative corrections, one expects m{sub h{degree}}{approximately}110{plus_minus}10&hthinsp;GeV. This particular scheme also resolves the {mu} problem of MSSM and enables one to realize an inflationary epoch with the spectral index of density fluctuations very close to unity (n{approx}0.98). {copyright} {ital 1998 American Institute of Physics.}

• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-91ER40626
• OSTI ID: 307148
• Report Number(s): CONF-980455--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 444; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CP INVARIANCE
NEUTRINO OSCILLATION
QUANTUM CHROMODYNAMICS
SPARTICLES
SU-2 GROUPS
SU-3 GROUPS
SUPERSYMMETRY
U-1 GROUPS
UNIFIED GAUGE MODELS