NPE weekly meeting 180308

 1. strange peaks in DCAz distribution
- Still we don't know why the peaks are appeared, but, we understand which PXL chips are make these peaks and reject these peaks with phi and estimated hit position in Z direction at 1st PXL layer cuts.
- Finger like distribution --3rd, 4th .. peaks-- are not shown in the hadron DCAz distribution because these peaks are very small. 2nd peak is less than 0.5% level of main peak and 3rd and 4th.. peaks are also few percent level of 2nd peak.
- New DCAz distribution for electron and hadron is producing now. It will be used for DCAz fitting.

2. DCAxy+DCAz fit
- I used Chi2 fit with TMiniut class and the chi2 function is modified to fit DCAxy and DCAz at the same time.
- Highest 2 pT bins are large difference in b to e fraction plot.
- Fit with new DCAz distribution with 2nd peak rejection cut.
- Fit DCAz and DCAxy separately.
- Check fitting without Ds, Lc for fitting
- Check Photnic electron templates (HIJING and data...) and efficiency correction as function of DCA

3. RUN15 pp/pAu NPE analysis
- Main issue is inconsistence with previous -- RUN12 pp result . RUN12 pp is consistent with PHENIX published result. 
- Very tight plan, but I and Peipei will try.

If I have missing comments/suggestions, please let me know.
Thanks