1) Vertex distribution in Run15 pp/pA  - Yanfang
Run15 pp/pAu vertex reconstruction algorithm is PPV-W mode (confirmed by Gene) with BeamLine Constraint.
Peak at VpdVz=327.67cm is due to VpdVz variable format (short) used in picoDst 
there is no online VPD coincidence requirement for Dimuon trigger according to Shuai, but there is a VPD sum reqruirement.
Open questions for dimuon analyses: 1) whether or not to apply DeltaVz cut 2) how to account for wrong vertex/VPD inefficiency 

2) Upsilon in Run14 AuAu dielectron - Zaochen
slide 3: need to propagate LS/MIXUS normalization uncertainty 
slide 3: why simultaneously fitting US and MIXUS gives larger uncertainty than fitting US-MIXUS.