Too high rate for BHT1 trigger:
- proposed solution:
1. increase HT1 threshold from  15- >16 ADC
2. if (1) does not work, then change Vz cut from 10 to |Vz| < 8 cm
3. if still needed, then increase threshold from 16 -> 17 ADC

Hao: D0 v2:
- bug corrected in applying efficiency weight
1/efficiency weight was only applied for the first centrality bin, half of the dPhi bins
- Systematic uncertainty due to efficiency weight estimated
- Is the bin width narrow enough? Can we use fast simulations to v2 results in the narrower bins (10%)? Hao thinks that current approach covers the possible deviation. The working group agreed with this explanation. Request: add uncertainty on eff. in slide 3 (left plot)

Question on D0 v2 results: is systematic error calculated the same way for v2{2} and v2{EP}? Hao will double check and coordinate with other PAs to have consistent results.

Micheal:D0 v3:
- charge hadron v3 results slightly lower in run 14 compared to published data, but eta gap used for event plane is larger for Michael's study, so this is expected.
roughly ~ 75% of data processed, but efficiency is lower in the remaining part of the data (by ~10%), so 10-15% increase in the final stat. expected
- suggestions: try to use 3 bins in phi-Psi and combine pT bins 2-4, 4-6
- Todo: compare to Yadav's results. Comment from Zhenyu: Yadav's results have changed from the collaboration meeting, we will compare these two analyses in the future.