Glueball Search: pp -> ΦΦ

Convener

Analyst

Analysis Details

• Exclusive reconstrucion of the decay pbar p -> ΦΦ -> 4 K
• cross section of non-resonant channel around 3-4 μb in ROI
• separation of resonant ΦΦ on top of non-resonant only possible with PWA (not in scope for physics booklet)

• Target of physics booklet analysis
  • reconstruct exclusive channel
  • determine efficiency dependent of decay angles of Φ and pbar p-System and proof, that there are no acceptance holes for a later PWA analysis
  • assume particular signal cross section
  • determine, how much data taking needed to measure ξ(2230) with 10 σ significance

Decay Modes

Background Channels

• DPM events (most likely not very relevant)
• most background will be non-resonant ΦΦ. Since the signal is also produced non-resonant, no production needed

Datasets

• pbar p -> phi phi @ E_cm = 2.15 GeV : 50k (ppbar_2phi_2150.dec)
• pbar p -> phi phi @ E_cm = 2.23 GeV : 50k (ppbar_2phi_2230.dec)
• pbar p -> phi phi @ E_cm = 2.33 GeV : 50k (ppbar_2phi_2330.dec)
• pbar p -> phi phi @ E_cm = 2.43 GeV : 50k (ppbar_2phi_2430.dec)
• DPM @ E_cm = 2.23 GeV : 1M

Documents

• KG13-070702_GoetzenDubna.pdf: PANDA Collaboration Meeting, Dubna (04.07.2007)

• AnalysisNote_pp_phiphi.pdf: Note on Phi Phi Analysis