The results of a spin-parity analysis of (n) over bar p annihilation in the channels with 3 and 5 charged pions are presented. In the former case, the analysis suggests the existence of two resonances with quantum numbers 0(++) and 2(++) around 1500-1550 MeV/c(2); in the latter case, the presence of a broad resonance at about 1350 MeV/c(2) decaying dominantly into rho rho is confirmed, but a great amount of rho sigma (1(-)) nonresonant background is required.
Exclusive final states in (n)over-bar-p annihilation
BALESTRA, Ferruccio;BOTTA, Elena;BRESSANI, Tullio;BUSSA, Maria Pia;BUSSO, Luigi;COSTA, Sergio;FERRERO, Livio;GARFAGNINI, Raffaello;GRASSO, Antonino;MARCELLO, Simonetta;PANZIERI, Daniele;ZOSI, Gianfranco;
1996-01-01
Abstract
The results of a spin-parity analysis of (n) over bar p annihilation in the channels with 3 and 5 charged pions are presented. In the former case, the analysis suggests the existence of two resonances with quantum numbers 0(++) and 2(++) around 1500-1550 MeV/c(2); in the latter case, the presence of a broad resonance at about 1350 MeV/c(2) decaying dominantly into rho rho is confirmed, but a great amount of rho sigma (1(-)) nonresonant background is required.
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