minutes HF PWG 4/16

1. Update on the D+- analysis in Run16 Au+Au 200GeV - Jan Vanek
i) Slightly different cuts in D+/- and D0 analysis. TPC Efficiency from embedding is calculated with cuts used for D0, will update
ii) Checked TPC tracking efficiency excluding tracks, both at truth and reconstructed levels, that have bad PID or large DCA. But this causes bias in the tracking efficiency as some of the tracks are excluded. Advised to keep the standard procedure and not exclude such tracks in efficiency calculation

2. Paper proposal on low energy NPE v2 analysis - Yuanjing Ji
i) Presented paper proposal for the NPE v2 measurements using 54.4 GeV and 27 GeV data
ii) Analysis mature and can go to PWGC preview
iii) Question on slide 8, proposed figure 3 left plot. Why the efficiency shows a sinusoidal like modulation beyond 1 GeV/c? Why the band is used instead of the actual points shown? Also suggestion to recheck statistical uncertainties
iv) PAs want to finish these checks before going ahead with the PWGC preview