Difference between revisions of "GlueX PID Meeting, July 28, 2020"
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# Updates: | # Updates: | ||
## Multivariate method | ## Multivariate method | ||
− | ## CDC dE/dx | + | ## [https://halldweb.jlab.org/DocDB/0046/004604/001/NSJ_PID_28July2020.pdf CDC dE/dx] |
## PIDFOM | ## PIDFOM | ||
Dependence of dE/dx resolution on number of hits (20% truncation) and momentum for pions | Dependence of dE/dx resolution on number of hits (20% truncation) and momentum for pions | ||
+ | |||
[[File:fdc_ndep2.PNG]] | [[File:fdc_ndep2.PNG]] | ||
[[File:fdc_ndep.PNG]] | [[File:fdc_ndep.PNG]] | ||
[[File:cdc_ndep.PNG]] | [[File:cdc_ndep.PNG]] | ||
# PID Selections and Systematics Task Force | # PID Selections and Systematics Task Force | ||
+ | #* [https://halldweb1.jlab.org/wiki/index.php/File:PID_meeting_28_7_2020.pdf η--->γ γ PID studies (Mahmoud)] | ||
+ | |||
+ | ==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 | ||
+ | * 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 |
Latest revision as of 08:26, 30 July 2020
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