Improved predictions for top quark, lightest supersymmetric particle, and Higgs scalar masses

Journal Article · Tue Nov 01 00:00:00 EST 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.5980· OSTI ID:7006639

Ananthanarayan, B ^[1]; Shafi, Q ^[2]; Wang, X M ^[3]

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1. Theory Group, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009 (India)
2. Bartol Research Institute, University of Delaware, Newark, Delaware 19716 (United States)
3. Physics Department, Muskingum College, New Concord, Ohio 43762 (United States)

We estimate the top quark, lightest sparticle (LSP), and Higgs scalar masses within a supersymmetric grand unified framework in which tan[beta][congruent][ital m][sub [ital t]][sup 0]/[ital m][sub [ital b]][sup 0] and the electroweak symmetry is radiatively broken. The requirement that the calculated [ital b] quark mass lies close to its measured value, together with the cosmological constraint [Omega][sub LSP][approx]1, fixes the top quark mass to be [ital m][sub [ital t]]([ital m][sub [ital t]])[approx]140--185 GeV. The LSP (of [ital B]-ino purity [approx gt] 98%) has a mass [similar to]200--350 GeV. In the scalar Higgs sector the [ital CP]-odd scalar mass [ital m][sub [ital A]][approx lt]220 GeV. With [ital m][sub [ital A]][approx gt][ital M][sub [ital Z]], as suggested by the decay [ital b][r arrow][ital s][gamma], we find [ital M][sub [ital Z]][approx lt][ital m][sub [ital h]][sup 0]([ital m][sub [ital H]][sup 0])[approx lt]140(220) GeV and 120 GeV [approx lt][ital m][sub [ital H]][sup [plus minus]][approx lt]240 GeV.

• OSTI ID: 7006639
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 50:9; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Pa
GRAND UNIFIED THEORY
SUPERSYMMETRY
HIGGS BOSONS
SPARTICLES
TOP PARTICLES
BEAUTY PARTICLES
CONSTRAINTS
CP INVARIANCE
QUARKS
RADIATIVE DECAY
SCALARS
SYMMETRY BREAKING
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
SYMMETRY
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
662210* - Specific Theories & Interaction Models
Particle Systematics- Unified Theories & Models- (1992-)
662440 - Properties of Other Particles Including Hypothetical Particles- (1992-)