1) Systematic uncertainty study for J/psi polarization in run15 p+p - Zhen Liu
Continue the study in CS frame. For paper proposal, may consider to combine with di-electron channel.

2) Multiplicity dependence of J/psi and D0 trigger bias - Takahito Todoroki
3) Simulation of VPD efficiency in run15 p+p - Takahito Todoroki
Trigger bias factor strongly depends on multiplicity. Takahito volunteer to setup an official framework in embedding simulation. This will be discussed in PWGC weekly meeting.