Pionic decays of phi (1020) and f' (1514)

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.18.806· OSTI ID:6692132

Pasupathy, J; Singh, C A

The decay amplitudes phi (1020) ..-->.. 3..pi.. and f' (1514) ..-->.. ..pi pi.. are calculated using unitarity corrections to the Okubo-Zweig-Iizuka rule. We use dispersion relations for the amplitudes phi ..-->.. rho..pi.. and f' ..-->.. ..pi pi.. and evaluate the contributions arising from intermediate states such as KK-bar, K*K-bar, etc. The KK-bar intermediate state contributes to the absorptive part of the amplitude phi ..-->.. rho..pi.. a value which corresponds to a partial width GAMMA (phi ..-->.. 3..pi..) of 150 keV. The contribution of the KK-bar and K*K-bar + K-barK* to the dispersive part of the amplitude phi ..-->.. rho..pi.. within the context of approximations employed by us is somewhat larger and corresponds to a partial width of 900 keV for phi ..-->.. 3..pi... For the f' ..-->.. ..pi pi.. amplitude we have evaluated the contributions of the KK-bar, etaeta, and K*K-bar + K-bar*K intermediate states using the dual model for the amplitudes KK-bar ..-->.. ..pi pi.., etaeta ..-->.. ..pi pi.., and K*K-bar ..-->.. ..pi pi... The effective strength of the amplitude f' ..-->.. ..pi pi.. arising from such unitarity corrections to the Okubo-Zweig-Iizuka rule corresponds to a partial width GAMMA (f' ..-->.. ..pi pi..) of 170 keV via the absorptive part and a value of 500 keV via the dispersive part.

• Research Organization: Centre for Theoretical Studies, Indian Institute of Science, Bangalore-560012, India
• OSTI ID: 6692132
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 18:3; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645205* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 0-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSONS
BRANCHING RATIO
DALITZ PLOT
DECAY
DECAY AMPLITUDES
DIAGRAMS
DUAL RESONANCE MODEL
ELEMENTARY PARTICLES
F-1514 RESONANCES
HADRONS
MATHEMATICAL MODELS
MATRIX ELEMENTS
MESON RESONANCES
MESONS
PARTICLE MODELS
PHI-1019 RESONANCES
PIONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
SCATTERPLOTS
TENSOR MESONS
TRANSITION AMPLITUDES
UNITARITY
VECTOR MESONS
VENEZIANO MODEL