Minimal string unification and constraint on hidden sector

1994/05/31 by H. Kawabe, Hiroshi Kawabe, T. Kobayashi +3 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Advanced Data Storage Technologies #Algorithms and Data Compression #Computer science #Constraint (computer-aided design) #Cryptography and Data Security #Geometry #Hidden sector #Mathematical physics #Mathematics #Physics #Programming language #String (physics) #Supersymmetry #Theoretical physics #Unification #hep-ph

paper · pdf · doi:10.1016/0550-3213(94)00465-q

published as Nucl.Phys.B434:210-230,1995 · 36 pages, KANAZAWA-94-09, Latex file

arxiv created 1994/10/19 · openalex publication_date 1995/01/01 · arxiv updated 2011/07/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We examine whether a minimal string model possessing the same massless spectra as the MSSM can be obtained from Z₄, Z₆ and Z₈ orbifold constructions. Using an anomaly cancellation condition of the target space duality symmetry, we derive allowable values of a level k₁ of U(1)_Y for the minimal string model on the orbifolds through computer analyses. We investigate threshold corrections of the gauge coupling constants of SU(3), SU(2) and U(1)_Y and examine consistencies of the model with the LEP experiments. Further we investigate what kinds of hidden sectors are consistent with the minimal string models. Also their gauge coupling constants of the hidden groups are estimated. We discuss Yukawa couplings of the models.

Citations

• Gluino condensation in superstring models
• Study of minimal string unification in Z8 orbifold models
• Gauge coupling unification. Strings versus SUSY-GUTs
• Moduli dependence of string loop corrections to gauge coupling constants
• Strings on orbifolds

Cited by

• Standard model-like D-brane models and gauge couplings