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- W181061153 abstract "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..." @default.
- W181061153 created "2016-06-24" @default.
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- W181061153 date "1983-05-01" @default.
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- W181061153 title "Determination of the parameters of inelastic resonances and of the background" @default.
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