1) single muon simulation by Jie
Slide 7 & 8: see cut off in DCA distributions for pion-decayed muons after requiring HFT acceptance, but not for kaons. This is attributed to the fact that the pion mass is not much larger than muon, while it is true for Kaons. 

Slide 9 and the file below show DCA distributions in data. There are cut offs in the tail. Are these tails due to pion-contributed muons? If so, not good for single-muon analysis.
http://www.star.bnl.gov/protected/lfspectra/huangbc/run14/emu/muDca_run14_mb.pdf

Slide 10: run detector simulation. The number of muons from pion/kaon-decay is very small. A more efficient way is to select and embed pion/kaon-decayed muons from Pythia. The momenta of the pion daugther does not seem to add up to that of pion.

2) SL15c vs SL15k comparison by Xiaozhi
There is a difference for gamma conversion electron HFT efficiency between SL15k and SL15c, but not for charged pions or Dalitz decayed electrons. The difference is found to come from MC HFT hits. Will check futher.

3) PXL simulator update by Kunsu
Studied in Run14 data at the ladder level, the dependence of the number of the misplaced pixel raw hits due to the decoder bug on number of raw hits. Parameterized such dependence and implemented into simulation. The MC-data agreement is improved.
Slide 3: whether the misplacement is random or correlated for Pixel raw hits? Answer is correlated.