STAR Flow, Chirality and Vorticity PWG

[pdixit <pdixit AT rcf.rhic.bnl.gov>]

Dear Prithwish and ShinIchi,
Thank you so much for the comments and suggestions. I will try to 
implement all the suggestions and present the analysis update in our 
group soon.

Thanks and regards,
Prabhupada Dixit
On 2021-07-28 21:41, ShinIchi Esumi via Star-fcv-l wrote:
> Dear Prabhupada
> If you like to maximize the event-plane resolution, you could just use
> full TPC region
> including iTPC region for your 2nd order Q-vector and do your
> phi-reconstruction analysis
> with excluding the two tracks from the Q-vector for pair-by-pair, just
> to exclude the trivial
> auto-correlation, where you might worry about small (or zero) eta-gap
> between POI and
> EP, that can only matter if the statistical accuracy of the
> measurement is very good that
> you do not have at the moment. One could even combine EP from full 2nd
> order TPC plane
> and full 1st order EPD plane, that Prithwish mentioned below, using
> the relative weighting
> factor between TPC and EPD based on the measured resolution in order
> to improve further
> more. It’s good to go step by step with individual planes as you do
> now, but at the end
> the resolution indeed matters to get the best statistically
> significant result, especially
> for such measurement with rare species.
> Best regards, ShinIchi
>
> > On Jul 29, 2021, at 0:00, Prithwish Tribedy via Star-fcv-l 
> > <star-fcv-l AT lists.bnl.gov> wrote:
> >
> > Hello Prabhupada,
> >  Thanks for the update. A few follow-up comments.
> >
> > 1. Please take a look at the run-by-run variation of QA variables. One 
> > can make use of the automated algorithm that was developed for isobar 
> > analysis. It takes histograms of quantities vs run number and gives 
> > you the bad runs.
> > /star/u/huyu/jumpcheck/jumpcheck_advanced.zip
> >
> > 2. Please make sure you check the pile-up cuts by looking at TOF_match 
> > vs refMult correlation.
> >
> > 3. For TPC event plane analysis instead of using 1>η>0.05 for particle 
> > of interest and -1<η<-0.05 for event plane (and vice versa) can you do 
> > the following. Use -0.9<η<0.9 for particle of interest and 1.5<|η|<0.9 
> > for event plane.
> >
> > 4. Use -0.9<η<0.9 for particle of interest and EPD first order planes 
> > for v2 estimations. You have to estimate v_211 = <cos(2φ - Ψ_1(east) - 
> > Ψ_1(west)>. The resolution for this measurement is Res(211) = 
> > <cos(Ψ_1(east) - Ψ_1(west))>.
> >
> > 5. Please make plots of m^2 from TOF for each pT window and show the 
> > pion, kaon and proton peaks to understand the contamination.
> >
> >
> > Best,
> > Prithwish
> >
> >
> >
> >
> > On 2021-07-28 04:39, pdixit via Star-fcv-l wrote:
> > > Dear convenors and all,
> > > Please find the link to my slide for today's weekly meeting.
> > > https://drupal.star.bnl.gov/STAR/system/files/7p7_phiv2_analysis.pdf
> > > Thanks and regards,
> > > Prabhupada
> > > On 2021-07-27 15:52, pdixit wrote:
> > > > Dear convenors,
> > > > I would like to present my analysis on v2 of phi-meson in Au+Au
> > > > collision at 7.7 GeV in run-21. Please add me to the list for the
> > > > presentation. I will post my slides later.
> > > > Thanks and regards,
> > > > Prabhupada Dixit
> > > > On 2021-07-26 15:56, ShinIchi Esumi via Star-fcv-l wrote:
> > > > > Dear FCV PWG colleagues
> > > > > We will have our weekly FCV PWG meeting on this Wednesday morning 
> > > > > 28/July/2021
> > > > > 9:30AM in BNL (NY time zone) at our usual time and place. So if you
> > > > > have anything to
> > > > > present, please let us know and please post your slide by Tuesday. 
> > > > > The
> > > > > zoom room link,
> > > > > ID and pass for the FCV PWG meeting are in our usual drupal agenda 
> > > > > page below.
> > > > > Please also keep in mind that all the preliminary plots should have
> > > > > already been there
> > > > > in the summary area below.
> > > > > Best regards, Jiangyong, Prithwish and ShinIchi
> > > > > Meeting agenda page with zoom link :
> > > > > https://drupal.star.bnl.gov/STAR/blog/jjiastar/bulkcorr
> > > > > Preliminary page :
> > > > > https://drupal.star.bnl.gov/STAR/pwg/bulk-correlations/bulkcorr-preliminary-summary
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