1) Trigger bias of J/psi in Run15 p+p and p+Au - Takahito Todoroki

• slide 7, there was a question about why the trigger bias factor is lower than that in the run9 D0 and D* paper. The explanation is the much higher luminosity in Run 15 than in run9. Takahito kindly include plots in the backup slide to show the luminosity dependent trigger bias factor
• slide 7 vs. 9. All of us are fine with either ways.

2) Update on Run14 MTD J/psi study - Rongrong Ma

• The reason about luminosity dependence of nHitsPoss is understood. nHitsPoss only count the possible hits before the last measured TPC hit.
• slide 16, recalculate pp reference to exclude pT<0.15 GeV/c data. Used PHENIX PRC2007 data, suggested to use PHENIX PRD2010 data. 
• slide 33, need to understand why TMII calculation is lower than their previous calculation.