Charmed Hybrid: pp -> Ψg η
Convener
Klaus Peters, GSI
Analyst
Marc Pelizäus, Bochum
Decay Modes
- production at 15 GeV beam momentum: pp→ψgη
- assume ψg mass m=4290MeV and width Γ=20MeV
- Channel 1: Ψg → χc1 (π0 π0)s-wave
- Χc1 → J/Ψ γ
- J/Ψ → e+ e- (50%), J/Ψ → μ+ μ- (50%)
- π0, η → γ γ
- Summary: pp → χc1 (π0 π0)s-wave η
- Channel 2: Ψg -> D0 D0*
- D0* → D0 π0
- D0 → K- π+ π0
- π0, η → γ γ
- Summary: pp → D0 D0*η
Background Channels
- Channel 1
- pp → χc0 (π0 π0)s-wave η
- pp → χc1 (π0 π0 π0)p-wave η
- pp → χc1 (π0 η)flat η
- all χcJ decay radiatively
- Channel 2
- pp → D0 D0*η, same D-channels as signal channel
- either 1 additional π0 in D0 decay
- or 1 additional π0 in D0 decay of the D0* decay
- pp → D0 D0*π0, same D-channels as signal channel
- each background channel with equal number of events as the signal channel
- pad0001.pdf: Panda Note: Charmonium and Charmonium Hybrids (preliminary)
This topic: Pbook
> WebHome > UStyletext-decorationoverlinepup-subgsub
Topic revision:
2008-09-06, BertramKopf