Observation of a scalar resonance decaying to π+π-π0π0 in overlinepp annihilation at rest
Abstract
We report an analysis of overlinepp annihilation at rest into ϱ+ϱ-π0 leading to the final state π+π-3 π0. A strong signal is observed for a scalar resonance with mass 1374 ± 38 MeV/ c2 and width 375 ± 61 MeV/ c2, decaying to ϱ+ϱ-. The resonance in ϱ+ϱ- represents 2.0 ± 0.3% of all overlinepp annihilation at rest. It is also observed to decay into two S-wave dipions ( π+π-) ( π0π0)). Under the assumption of isospin 0, this is probably ƒ 0(1400) , seen for the first time in its 4 π decay mode.
- Publication:
-
Physics Letters B
- Pub Date:
- February 1994
- DOI:
- 10.1016/0370-2693(94)91176-2
- Bibcode:
- 1994PhLB..322..431A