Status of the /Delta/I = 1/2 rule in Kaon decay

Journal Article · Sun Jan 01 00:00:00 EST 1989 · Int. J. Mod. Phys. A; (United States)

DOI:https://doi.org/10.1142/S0217751X89000261· OSTI ID:5851144

Cheng, H Y

The /Delta/I = 1/2 rule in /Kappa/ /yields/ /pi//pi/ decays and its status are discussed and reviewed. First, the authors present the phenomenological deductions which have a firm basis, including the penguin diagram, vacuum insertion, current algebra and chiral perturbation theory. Then they proceed to discuss new conjectures and speculations e.g. I/N expansion, W-exchange, low-energy penguin diagrams, the s-d self-energy tadpole, QCD-quality, instanton effects, etc. and to assess their roles in understanding the /Delta/I = 1/2 enigma.

• Research Organization: Indiana Univ., Bloomington, IN (USA). Dept. of Physics
• OSTI ID: 5851144
• Journal Information: Int. J. Mod. Phys. A; (United States), Vol. 4:3
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
KAONS
PARTICLE DECAY
CURRENT ALGEBRA
DUALITY
INSTANTONS
PERTURBATION THEORY
PIONS
QUANTUM CHROMODYNAMICS
BOSONS
DECAY
ELEMENTARY PARTICLES
FIELD THEORIES
HADRONS
MESONS
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
QUASI PARTICLES
STRANGE MESONS
STRANGE PARTICLES
SYMMETRY
645300* - High Energy Physics- Particle Invariance Principles & Symmetries
645400 - High Energy Physics- Field Theory