Difference between revisions of "GlueX PID Meeting, July 14, 2020"
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### [https://halldweb.jlab.org/wiki/images/0/04/Pid_wg_dedx.pdf Dependence of dE/dx on N] (Simon), using Run 30274. | ### [https://halldweb.jlab.org/wiki/images/0/04/Pid_wg_dedx.pdf Dependence of dE/dx on N] (Simon), using Run 30274. | ||
# PID Selections and Systematics Task Force | # PID Selections and Systematics Task Force | ||
| + | |||
| + | =Minutes= | ||
| + | Attendees: Alex A., Sean, Mahmoud, Mark D., Daniel L., Naomi, Nilanga, Susan, S.T. | ||
| + | * Daniel reported [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4574 Lepton ID performance] for a few different algorithms | ||
| + | ** His most recent ML algorithm gives the best results for S/sqrt(S+B) | ||
| + | *Naomi looked at dE/dx in CDC using simulated bggen events | ||
| + | ** Sees the bump behavior near 70 degrees in the bggen events (roughly in the same place as for real data), not present for particle gun | ||
| + | * S.T. showed dependence of dE/dx in FDC and CDC on number of hits used in dE/dx calculation | ||
| + | * Mahmoud continues comparison of timing between MC and data for η→γγ events | ||
| + | ** for data the time difference distributions are asymmetric -- Daniel suggested using "Crystal barrel" function | ||
| + | ** MC a little wider than real data | ||
Latest revision as of 07:46, 16 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 on N (Simon), using Run 30274.
- PID Selections and Systematics Task Force
Minutes
Attendees: Alex A., Sean, Mahmoud, Mark D., Daniel L., Naomi, Nilanga, Susan, S.T.
- Daniel reported Lepton ID performance for a few different algorithms
- His most recent ML algorithm gives the best results for S/sqrt(S+B)
- Naomi looked at dE/dx in CDC using simulated bggen events
- Sees the bump behavior near 70 degrees in the bggen events (roughly in the same place as for real data), not present for particle gun
- S.T. showed dependence of dE/dx in FDC and CDC on number of hits used in dE/dx calculation
- Mahmoud continues comparison of timing between MC and data for η→γγ events
- for data the time difference distributions are asymmetric -- Daniel suggested using "Crystal barrel" function
- MC a little wider than real data
