Determination of the parameters of inelastic resonances and of the background

Journal Article · Sun May 01 04:00:00 EDT 1983 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5510544

Khenner, V K

Determination of the masses and widths of resonances and of the parameters of the background is studied. The matrix parametrizations (M and K matrices and the N/D method) are compared with the parametrization in terms of the sum of an inelastic resonant term and a background amplitude. It is shown that in the matrix parametrizations the inelastic background is determined unambiguously and cannot be inserted by hand. The formalism is applied to the analysis of p-wave ..pi pi.. scattering. The question of the existence of the rho'(1520) meson is discussed. It is shown that the inclusion of the background leads to a good description of the ..pi pi.. scattering data with GAMMA/sub rhoprimepipi//GAMMA0..omega..roughly-equal0.15. The amplitudes obtained are used for the analysis of the pion form factor and of the form factor for the transition ..gamma --> pi../sup 0/..omega...

• Research Organization: Perm' Polytechnic Institute
• OSTI ID: 5510544
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 37:5; ISSN SJNCA
• 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
ELEMENTARY PARTICLES
FORM FACTORS
HADRON-HADRON INTERACTIONS
HADRONS
INELASTIC SCATTERING
INTERACTIONS
MESON RESONANCES
MESON-MESON INTERACTIONS
MESONS
P WAVES
PARTIAL WAVES
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PION-PION INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
RESONANCE SCATTERING
RHO-1500 RESONANCES
SCATTERING
SCATTERING AMPLITUDES