Fermion doubling and a natural solution of the strong [ital CP] problem

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.2218· OSTI ID:7025751

Chang, S; Kim, J E ^[1]

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1. Department of Physics and Center for Theoretical Physics, Seoul National University, Seoul 151-742 (Korea, Republic of)

We suggest the fermion doubling for all quarks and leptons. It is a generalization of the neutrino doubling of the seesaw mechanism. The new quarks and leptons are SU(2) singlets and carry the electromagnetic charges of their lighter counterparts. An SU(3) [ital anomaly[minus]free] [ital global] [ital symmetry] or a discrete symmetry can be introduced to restrict the Yukawa couplings. The form of mass matrix belongs to that of Nelson and Barr. The weak [ital CP] violation of the Kobayashi-Maskawa form is obtained through the spontaneous breaking of [ital CP] symmetry at the high energy scale. The strong [ital CP] solution is through a specific form of the mass matrix. At low energy, the particle content is the same as in the standard model. For a model with a global symmetry, in addition, there exists a massless Majoron.

• OSTI ID: 7025751
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 50:3; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662210* -- Specific Theories & Interaction Models
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGES
CP INVARIANCE
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
INVARIANCE PRINCIPLES
KOBAYASHI-MASKAWA MATRIX
LEPTONS
LIE GROUPS
MASSLESS PARTICLES
MATRICES
NEUTRINOS
NUCLEAR POTENTIAL
POSTULATED PARTICLES
POTENTIALS
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARKS
SU GROUPS
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
UNIFIED-FIELD THEORIES
YUKAWA POTENTIAL