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The bi-weekly analysis meetings are will be held twice to accommodate all members who want to participate.
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Thursday, March-29 7 pm meeting summary:
Main agenda:
- Sivers asymmetry extraction from MC events. Goal: Understand all step in the Sivers asymmetry extraction.
- List the critical issue issues in the analysis and assign the PIC (person in charge) for each issue.
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Issue 1: phi-s definition, reference frame and future improvement
There was a confusion about the best reference frame for Drell-Yan. I followed the E1039-Proposal which used the Collin-Sopper frame, but the definition of phi-s (the spin polarization vector angle) is not clear. Is Collin-sopper frame the best referance for Drell-Yan analysis? I quoted some reference in my slide. The NMSU group have also discussed this issue but the conclusion hasn't settled yet. In the meeting, we got two others good paper/literature for reference:
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Description: Setup a framework/macro to extract Sivers Asymmetry from a Full simulation
PIC: Zulkaida & Forhad
Issue: E906-E1039 Bridge
Description: Provide information or general framework or dictionary for new comers to learn E906 data
PIC: Kenichi
Issue: Detector performance
Description: Establish methods to measure the detector performance & calibration
PIC: Mindy (for Chamber)
PIC: Michigan grup for FPGA trigger (proposed in the meeting, I will email them soon), Forhad
Issue: Systematics
Description: Perform a packing factor measurement, Establish the best method to measure the dilution factor, Keeping track for all non-negligible systematic source that affect the Sivers asymmetry
PIC: Arthur, David UNH (proposed)
Issue: Background studies
Description: Establish the best method to find the line shape & simulate the random background, Establish the best method to separate events from beam dump
PIC: Zulkaida
Issue: Tracking
Description: Establish an efficient tracking algorithm
PIC: Haiwang
Issue 4: Questions from Rick
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