Predictions of the top quark mass in the minimal supersymmetric left-right model

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.52.R1· OSTI ID:69070

Brahmachari, B ^[1]

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1. Theory Group, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009 (India)

The one-loop evolution of Yukawa couplings in the minimal supersymmetric left-right (MSUSYLR) model with a wide variation of the right-handed breaking scale {ital M}{sub {ital R}} from 1 TeV to 10{sup 18} GeV is studied assuming that all third generation Yukawa couplings are equal and in the fixed point domain of the top quark Yukawa coupling ({ital h}{sub {ital t}}) at the Planck scale. We show that (1) the top quark Yukawa coupling {ital h}{sub {ital t}} displays a fixed point behavior that is similar to that of the minimal supersymmetric standard model, (2) the MSUSYLR model predicts a value of the top quark mass in the interval 177 to 184 GeV for {alpha}{sub {ital s}} in the interval 0.11 to 0.12, (3) a large value of tan{beta} is required to reproduce the correct mass of the bottom quark and {tau} lepton, (4) with the experimental value of the ratio {ital m}{sub {ital b}}({ital m}{sub {ital b}})/{ital m}{sub {tau}}({ital m}{sub {tau}}) as an input the range of the right-handed symmetry-breaking scale {ital M}{sub {ital R}} can be predicted, and (5) the numerical value of the Majorana Yukawa coupling {ital h}{sub {ital M}} can be calculated which is otherwise a completely free parameter.

• OSTI ID: 69070
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COUPLING
MASS
QUARKS
SUPERSYMMETRY
TOP PARTICLES
YUKAWA POTENTIAL