Yukawa couplings in superstring-derived standardlike models

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.5021· OSTI ID:6771880

Faraggi, A E ^[1]

---

1. Department of Physics, Weizmann Institute of Science, Rehovot 76100 (Israel)

I discuss Yukawa couplings in standardlike models which are derived from superstring theory in the free fermionic formulation. I introduce new notation for the construction of these models. I show how the choice of boundary conditions selects a trilevel Yukawa coupling either for +2/3 charged quarks or for [minus]1/3 charged quarks. I prove this selection rule. I make the conjecture that in this class of standard-like models a possible connection may exist between the requirement of [ital F] and [ital D] flatness at the string level and the heaviness of the top quark relative to the lighter quarks and leptons. I discuss how the choice of boundary conditions determines the nonvanishing mass terms from quartic-order terms. I discuss the implication for the mass of the top quark.

• OSTI ID: 6771880
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:11; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662110* -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662210 -- Specific Theories & Interaction Models
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOUNDARY CONDITIONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
MASS SPECTRA
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARK MODEL
QUARKS
SELECTION RULES
SPECTRA
STANDARD MODEL
STRING MODELS
SUPERSYMMETRY
SYMMETRY
UNIFIED GAUGE MODELS