On Jan-15-2019

Comments from the meeting are:
1) Do we understand the hole on vx-vy distribution on slide 3?
2)The centrality was done |Vz|<30 cm, but my analysis has applied a Vz cut of |Vz|<60 cm.
   The effect is unknown.  
3)The acceptance difference is different from other year's dataset, Do we understand the structure at 2 GeV/c^2
   on slides 12?