STAR Flow, Chirality and Vorticity PWG

[Prithwish Tribedy <ptribedy AT rcf.rhic.bnl.gov>]

Hello Everyone,
  Can we please finalize a list of QA variables by today and send it to 
Ashik and team before tomorrow's QA board meeting. Here is my proposal, 
please chime in:

A) QA variables for centrality determination (for collaboration wide bad 
runs):
1. <RefMult>
2. <TOFMatch>
3. <pT> (I am not sure about this)
4. <η>
5. <φ>
6. <DCA>
7. <nHitsFit>
8. <Vz>

B) QA variables for FCV analyses (for region of stable run and analysis 
specific bad runs):

1. Everything used in centrality determination
2. <TOFMult>
3. <Q1xTPC>
4. <Q1yTPC>
3. <Q2xTPC>
4. <Q2yTPC>
5. <Q1xEPD>
6. <Q1yEPD>
7. <Q2xEPD>
8. <Q2yEPD>
9. <Q1xZDC>
10. <Q1yZDC>
11. <X>_{ZDC}
11. <Y>_{ZDC}
11. <Q1xBBC>
11. <Q1yBBC>
11. <Q2xBBC>
11. <Q2yBBC>
9. <EPDEHits>
10. <EPDWHits>

Anything else?
Best,
Prithwish



On 2021-10-17 21:33, ASHIK IKBAL via Star-fcv-l wrote:
> Dear Shinlchi,
>
> Thanks for pointing this out. We can add <phi> and the vertex related
> quantity,<dca> in the QA list. We will have separate bad run list for
> centrality determination and also for the physics analyses as
> clarified by Rongrong in his email.
>
> The reason for adding the Q-vectors in the list is the following. We
> see there is a run ID dependence of the Q-vectors. The Q-vectors are
> really necessary for flow analyses, and hence has been added in the QA
> variable list.
>
> Therefore, the idea of this discussion is to get suggestions about the
> QA variables that are sensitive to centrality determination as well as
> physics analyses from the PWG.
>
> Best,
> Ashik
>
> On Sun, Oct 17, 2021 at 1:33 PM ShinIchi Esumi via Star-fcv-l
> <star-fcv-l AT lists.bnl.gov> wrote:
>
> > Dear Ashik and all
> > Thanks for the initiation. I have a few comments and questions.
> > I was wondering why you have chosen to use Q-vectors in stead of
> > more direct
> > average <phi> at least for TPC, since you do have also average <eta>
> > and <pT>.
> > But maybe Q-vector would  be directly used by the analysis, and
> > could be more
> > sensitive to the location of dead azimuthal sector than <phi>, so it
> > might be more
> > reasonable as well, though. Another question is about the vertex
> > qualities, such
> > as run-by-run average vertex position in radial/xy and z direction?
> > The “average
> > DCAxy/z in each event” was also found to be a good indicator for
> > removing bad
> > events in BES1 especially for central events in fluctuation
> > analysis, so I was also
> > wondering if run-by-run selection based on such DCA related
> > information as well,
> > but this might be too much for the current initial QA studies
> > especially for the
> > general centrality. Thanks again.
> > Best regards, ShinIchi
> >
> > > On Oct 18, 2021, at 1:49, Prithwish Tribedy via Star-fcv-l
> > <star-fcv-l AT lists.bnl.gov> wrote:
> > > Hi Ashik and all,
> > > During our isobar analysis we compiled a list of observables.
> > This may give us some clue about which quantities are important:
> > >
> > https://drupal.star.bnl.gov/STAR/system/files/summary_qa_step2.html
> > > I would still encourage people to provide input before Friday.
> > > Best,
> > > Prithwish
> > >
> > >
> > > On 2021-10-17 12:36, ASHIK IKBAL via Star-fcv-l wrote:
> > > > Hi FCV folks,
> > > > We had a discussion on the QA variables for new and upcoming data
> > sets
> > > > in the last week QA board meeting. So far we (the QA team) are
> > using
> > > > the following variables for 19.6 GeV run-by-run QA analysis:
> > > > 1       runidvsrefmult
> > > > 2       runidvstofmatched
> > > > 3       runidvsavgpt
> > > > 4       runidvsavgeta
> > > > 5       runidvsavgQ1x
> > > > 6       runidvsavgQ1y
> > > > 7       runidvsavgQ2x
> > > > 8       runidvsavgQ2y
> > > > 9       runidvsavgEpdQ1x
> > > > 10      runidvsavgEpdQ1y
> > > > 11      runidvsavgEpdQ2x
> > > > 12      runidvsavgEpdQ2y
> > > > 13.             runidvsbemcmatched
> > > > The list of  badruns (identified based on the QA variables using
> > > > automated run-by-run QA algorithm) is really necessary for the
> > > > centrality team. The QA board has set a deadline of next Friday
> > (Oct.
> > > > 22) to finalize the variables.
> > > > Please speak up if anyone wants to look at any other variables
> > for the
> > > > run-by-run QA analysis.
> > > > Thanks,
> > > > Ashik
> > > > --
> > > > Ashik Ikbal
> > > > Research Associate
> > > > Kent State University
> > > > Department Of Physics
> > > > Kent, OH 44242, USA
> > > > Contact no.s: +1 631-504-7647 (USA)
> > > > +91 8250216234 (India)
> > > > Alternate e-mails: asheikh2 AT kent.edu
> > > > ashik AT rcf.rhic.bnl.gov
> > > > ashik.ikbal.sheikh AT cern.ch
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>  --
>
> Ashik Ikbal
>
> Research Associate
> Kent State University
> Department Of Physics
>
> Kent, OH 44242, USA
>
> Contact no.s: +1 631-504-7647 (USA)
>
>                       +91 8250216234 (India)
>
> Alternate e-mails: asheikh2 AT kent.edu
>                              ashik AT rcf.rhic.bnl.gov
>                              ashik.ikbal.sheikh AT cern.ch
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