Chiral hierarchies and flavor-changing neutral currents in hypercolor

Journal Article · Mon Aug 25 04:00:00 EDT 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.57.957· OSTI ID:5172996

Appelquist, T; Karabali, D; Wijewardhana, L C.R.

Dynamical chiral-symmetry breaking in asymptotically free theories with a slowly running coupling is analyzed. When the confinement scale ..lambda.. is much less than the cutoff M beyond which the theory cannot be used in isolation, the dynamical mass ..sigma..(p) starts from a value approx. =..lambda.. for momenta papprox. <..lambda.. and falls slowly for a significant range p>..lambda... It then takes on the asymptotic form (lnp)/sup a//p/sup 2/ where a>1. In hypercolor theories this behavior generates sufficiently large fermion masses for a higher value of M than naively expected. This in turn could allow for an adequate suppression of flavor-changing neutral currents.

• Research Organization: Department of Physics, Yale University, New Haven, Connecticut 06511
• OSTI ID: 5172996
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:8; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645302* -- High Energy Physics-- Particle Invariance Principles &amp; Symmetries-- Applications to Electromagnetic &amp; Weak Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
CHIRAL SYMMETRY
COLOR MODEL
COMPOSITE MODELS
CURRENTS
ENERGY
FERMIONS
FIELD THEORIES
FLAVOR MODEL
GAUGE INVARIANCE
INVARIANCE PRINCIPLES
MASS
MATHEMATICAL MODELS
NEUTRAL CURRENTS
PARTICLE MODELS
PERTURBATION THEORY
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
SELF-ENERGY
SYMMETRY
SYMMETRY BREAKING