New scenario for string unification

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.1566· OSTI ID:286146

Lopez, J L; Nanopoulos, D V ^[1]

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1. Department of Physics, Bonner Nuclear Lab, Rice University, 6100 Main Street, Houston, Texas 77005 (United States)

We present a new scenario for gauge coupling unification in flipped SU(5) string models, which identifies the {ital M}{sub 32} scale of SU(3) and SU(2) unification with the empirical {ital M}{sub LEP}{approximately}10{sup 15{minus}16} GeV scale, and the {ital M}{sub 51} scale of SU(5) and U(1) unification with the theoretical {ital M}{sub string}{approximately}5{times}10{sup 17} GeV string unification scale. The vacuum shift necessary for the cancellation of the anomalous U{sub {ital A}}(1) and an SU(4) hidden sector with fractionally charged particles play a crucial role in the dynamical determination of all intermediate mass scales in this scenario. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Texas A&M Research Foundation
• DOE Contract Number: FG05-91ER40633; FG05-92ER40717
• OSTI ID: 286146
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGED PARTICLES
COUPLING
MASS
STRING MODELS
SU-2 GROUPS
SU-3 GROUPS
SU-4 GROUPS
SU-5 GROUPS
SUPERSYMMETRY
U-1 GROUPS