We report on the decay to two photons of the χc0(1 3P0) charmonium resonance formed in p̄p interactions at Fermilab experiment E835. We have measured the product of branching ratios BR(χc0→p̄p) x BR(χc0 →γγ)=(6.52±1.18(stat)-0.72 +0.48(sys))×10-8. Using values from the 2002 PDG, this measurement leads to the partial width Γ(χc0 →γγ)=2.9±0.9 keV.
|Original language||English (US)|
|Number of pages||6|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Mar 25 2004|
ASJC Scopus subject areas
- Nuclear and High Energy Physics