GlueX PID Meeting, July 28, 2020
From GlueXWiki
Meeting time and day: 10:30 am, Tuesdays
Meeting Connections
- To join via a Web Browser, go to the page [1] https://bluejeans.com/927733173.
- To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 927733173.
- To join via phone, use one of the following numbers and the Conference ID: 927733173.
- US or Canada: +1 408 740 7256 or
- US or Canada: +1 888 240 2560
Agenda
- Announcements
- Updates:
- Multivariate method
- CDC dE/dx
- PIDFOM
Dependence of dE/dx resolution on number of hits (20% truncation) and momentum for pions
- PID Selections and Systematics Task Force
Minutes
Attendees: Mark I., Justin, Daniel, Naomi, Sean, Mahmoud, Beni, Mark D., Susan, Alex A., S.T.
- Daniel continues to work on testing new ML algorithm on di-lepton data
- Naomi reported on her continuing CDC dE/dx studies.
- Finds good qualitative agreement between bggen and data
- Strange bump in dEdx for tracks near 70 degrees shows up in both
- Bumps and wiggles depend on number of tracks
- Improved dE/dx (for amplitude) correction map (to get rid of θ dependence in data)
- Corrected dE/dx shows better separation between proton and kaon bands at low momentum
- Corrected dE/dx looks more like MC dE/dx
- Correction map does not work as well for dE/dx using CDC integral
- Finds good qualitative agreement between bggen and data
- S.T. showed dependence of dE/dx on number of hits used in calculation and momentum
- Naomi's correction was not applied yet
- Same general shape for all momenta except for low N in CDC
- Mahmoud continues comparing timing for MC/data using η→γγ
- MC resolution does not depend on p, but real data does
- MC resolution is worse than real data resolution
- Means for both data and MC depend on p