PPT Slide
- ~6000 Central Au-Au events processed, with J/ys mixed in both arms
- ~2000 Minimum bias events processed
- Dimuon mass spectra examined versus various analysis cuts
North Arm (10-35 degrees)
Unlike-sign dimuons with no cuts, muon identification and “good reconstruction” cuts. North arm.
Unlike-sign dimuons compared to like-sign dimuons after analysis cuts. Discrepencies shown to come from two nearly identical ghost-tracks.