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arXiv · hep-ph/9711319

The two-pion spectra for the reaction π^- p -> π^0π^0 n at 38 GeV/c pion momentum and combined analysis of the GAMS, Crystal Barrel and BNL data

V. V. Anisovich·Yu. D. Prokoshkin·A. A. Kondashov·S. A. Sadovsky·A. V. Sarantsev
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Abstract

We perform the K-matrix analysis of meson partial waves with IJ^{PC} =00^{++}, 10^{++}, 02^{++}, 12^{++} basing on GAMS data on π^-p -> π^0π^0 n, ηηn, ηη' n together with BNL data on π^-p -> K\bar K n and Crystal Barrel data on p\bar p (at rest) -> π^0π^0π^0, π^0ηη, π^0π^0η. The positions of the amplitude poles (physical resonances) are determined as well as the positions of the K-matrix poles (bare states) and the values of bare state couplings to two-meson channels. Nonet classification of the determined bare states is discussed.

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V. V. Anisovich, Yu. D. Prokoshkin, A. A. Kondashov, S. A. Sadovsky, A. V. Sarantsev. 1997-11-13. The two-pion spectra for the reaction π^- p -> π^0π^0 n at 38 GeV/c pion momentum and combined analysis of the GAMS, Crystal Barrel and BNL data. https://doi.org/10.1134/1.1307464

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