A) Latest Preliminary results:

Ds spectra: 
http://www.star.bnl.gov/protected/heavy/xgn1992/QM17/plots/Ds_spectra_shifted.pdf

Ds/D0 ratio:
http://www.star.bnl.gov/protected/heavy/xgn1992/QM17/plots/Ds_D0_Data.pdf

Ds RAA:
https://drupal.star.bnl.gov/STAR/system/files/dsraa_comp_k0s.pdf

Ds v2 :
https://drupal.star.bnl.gov/STAR/system/files/Ds_D0_v2.pdf

All preliminary results obtained using cut tuned using TMVA in rectangular cut method.
Cut tuning using BDT cut method in TMVA is found be to be better than rectangular cut method.
Signal significance is improved significantly. 

B) Latest Ds results using BDT cut method:

1) New results in 0-10 and 10-40% centrality using BDT cut has been presented in HF PWG on 2017/8/24.

https://drupal.star.bnl.gov/STAR/system/files/Ds_by_d0_BDT_update.pdf

2) For peripheral collisions, we need vertex resolution correction.

Vertex resolution correction in BDT cut method is done. Needs to be presented in PWG.

https://drupal.star.bnl.gov/STAR/system/files/vtx_corr_bdt_0.pdf

C) To Do List:

2) Analysis note