TY - JOUR

T1 - Bottom-tau unification in a supersymmetric SU(5) grand unified theory and constraints from [Formula Presented] and muon [Formula Presented]

AU - Komine, Shinji

AU - Yamaguchi, Masahiro

PY - 2002/1/1

Y1 - 2002/1/1

N2 - An analysis is made on bottom-tau Yukawa unification in supersymmetric (SUSY) SU(5) grand unified theory (GUT) in the framework of minimal supergravity, in which the parameter space is restricted by some experimental constraints including (Formula presented) and muon (Formula presented) The bottom-tau unification can be accommodated to the measured branching ratio (Formula presented) if superparticle masses are relatively heavy and the Higgsino mass parameter (Formula presented) is negative. On the other hand, if we take the latest muon (Formula presented) data to require positive SUSY contributions, then wrong-sign threshold corrections at the SUSY scale upset the Yukawa unification with more than (Formula presented) discrepancy. It has to be compensated by superheavy threshold corrections around the GUT scale, which constrains models of flavor in SUSY GUT. A pattern of the superparticle masses preferred by the three requirements is also commented upon.

AB - An analysis is made on bottom-tau Yukawa unification in supersymmetric (SUSY) SU(5) grand unified theory (GUT) in the framework of minimal supergravity, in which the parameter space is restricted by some experimental constraints including (Formula presented) and muon (Formula presented) The bottom-tau unification can be accommodated to the measured branching ratio (Formula presented) if superparticle masses are relatively heavy and the Higgsino mass parameter (Formula presented) is negative. On the other hand, if we take the latest muon (Formula presented) data to require positive SUSY contributions, then wrong-sign threshold corrections at the SUSY scale upset the Yukawa unification with more than (Formula presented) discrepancy. It has to be compensated by superheavy threshold corrections around the GUT scale, which constrains models of flavor in SUSY GUT. A pattern of the superparticle masses preferred by the three requirements is also commented upon.

UR - http://www.scopus.com/inward/record.url?scp=85038271507&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85038271507&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.65.075013

DO - 10.1103/PhysRevD.65.075013

M3 - Article

AN - SCOPUS:85038271507

VL - 65

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 7

ER -