A study of the centrally produced pi0pi0pi0 channel in pp interactions at 450 GeV/c

TL;DR

This paper investigates the production of three neutral pions in proton-proton interactions at 450 GeV/c, identifying key resonances and measuring branching ratios for various mesons.

Contribution

It provides new measurements of resonance signals and branching ratios for eta(547), pi2(1670), and sets upper limits for other meson decays into 3pi0.

Findings

Clear eta(547) and pi2(1670) signals in the mass spectrum

Branching ratios for eta(547) and pi2(1670) determined

Upper limits established for omega(782), a1(1260), a2(1320) decays into 3pi0

Abstract

The reaction pp -> pf (pi0pi0pi0) ps has been studied at 450 GeV/c. The pi0pi0pi0 effective mass spectrum shows clear eta(547) and pi2(1670) signals. Branching ratios for the eta(547) and pi_2(1670) are given as well as upper limits for the decays of the omega(782), a1(1260) and a2(1320) into 3pi0.