Scalar mesons and the decay of the iota: A paradox explained

Journal Article · Sun Dec 01 04:00:00 EST 1985 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.32.2971· OSTI ID:5007862

Frank, M; Isgur, N; O'Donnell, P J; Weinstein, J

We show that the ''delta(980) dominance'' of the decay iota(1440)..-->..KK-bar..pi.., in apparent contradiction to the failure to observe the decay iota..-->..eta..pi pi.., can be explained in the KK-bar molecule interpretation of the S( and delta scalar mesons via KK-bar final-state interactions in the potential V/sub K/K-bar which binds the KK-bar system. We are unable to distinguish conclusively between a primary phase-space and primary K(K+K (K distribution; however, we note that the latter interpretation would be consistent with the expected K(K+K (K branching ratio of the (mainly) ..omega..-like state of the radially excited pseudoscalar-meson nonet. This makes the existence of the reported eta(1275) meson crucial for deciding whether the iota is an ordinary meson or something new.

• Research Organization: Department of Physics, University of Toronto, Toronto, Canada M5S 1A7
• OSTI ID: 5007862
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 32:11; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIKAONS
ANTIMATTER
ANTIMESONS
ANTIPARTICLES
BOSONS
BRANCHING RATIO
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
HADRONIC PARTICLE DECAY
HADRONS
KAONS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MESONS
PARTIAL WAVES
PARTICLE DECAY
PARTICLE MODELS
PHASE SPACE
PIONS
PSEUDOSCALAR ANTIMESONS
PSEUDOSCALAR MESONS
QUANTUM NUMBERS
QUARK MODEL
S WAVES
SPACE
STRANGE PARTICLES