STAR Flow, Chirality and Vorticity PWG

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

On 2020-09-15 20:58, Prithwish Tribedy via Star-fcv-l wrote:
> Hello Prabhupada,
>
> The abstract is already in a good shape, please consider the following 
> comments.
>
> Comments on the abstract:
>
> cross section for φ mesons are —> cross section for φ mesons is
>
> φ mesons hadrons allows  — > φ mesons allows
>
> collective properties of early stages —> collective properties of the
> early stages
>
> at a new centre-of-mass energies —> at the new centre-of-mass energies
>
> Event Plane Detector (EPD) allows —> Event Plane Detectors (EPDs) allow
>
> using event plane with large gaps  —> using event planes with large 
> gaps
>
> and EPD (2.1<|η|<5.1) —> and EPDs (2.1<|η|<5.1)
>
> High precision test —> A high precision test
>
> constituent quark scaling of v2 (including other hadrons) —>
> constituent quark scaling of φ meson v2 (by including measurements for
> other hadrons)
>
> such measurements at the other —> such measurements at the other
> collision energies
>
> of beam energy scan phase II —> of the RHIC beam energy scan phase II
>
>
> Comments on the analysis & preliminary approval:
>
> I was looking at you studies:
>
> https://drupal.star.bnl.gov/STAR/system/files/BullCorr_180820.pdf
> https://drupal.star.bnl.gov/STAR/system/files/Bulkcorr_meeting2.pdf
>
> 1. In the abstract you mentioned “of 54.4 GeV (∼1.3 billion events)
> and 27 GeV (∼600 million events)”
> but I see you only found  600 M for 54.4 and 350M for 27 GeV. Is this
> difference caused by some quality cuts or you are on your way to
> accumulate more events?
>
> 2. Did you consider the effect of pile-up and bad runs. If not, do you
> plan to include such in the future analysis?
>
> 3. I think the Nhits/hitmax > 0.52 cut can be removed to gain more
> statistics for this precision analysis.
>
> 4. For 27 GeV analysis, a while ago Risa presented Ψ2 event plane
> resolution for her study, can you please cross-check if your
> resolution numbers are consistent (at least in the same ballpark) with
> what she got:
> https://drupal.star.bnl.gov/STAR/system/files/Risa_pwg0318_ver2.pdf
>
> Regards,
> Prithwish
>
>
> On 2020-09-14 22:44, webmaster--- via Star-fcv-l wrote:
> > Dear star-fcv-l AT lists.bnl.gov members,
> >
> > Prabhupada Dixit (prabhupadad AT iiserbpr.ac.in) has submitted a material 
> > for a
> > review, please have a look:
> > https://drupal.star.bnl.gov/STAR/node/52051
> >
> > ---
> > If you have any problems with the review process, please contact
> > webmaster AT www.star.bnl.gov
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Dear Prithwish,
Thank you so much for all your comments and suggestions. I have 
implemented all the corrections in the abstract as suggested by you. 
Please find my modified abstract in the given link blow

https://drupal.star.bnl.gov/STAR/system/files/abstract_30.pdf

Below are some clarifications to your comments.
1. In the abstract you mentioned “of 54.4 GeV (∼1.3 billion events) and 
27 GeV (∼600 million events)”but I see you only found  600 M for 54.4 
and 350M for 27 GeV. Is this difference caused by some quality cuts or 
you are on your way to accumulate more events?

In the abstract, I have mentioned the total number of events recorded 
but in presentation those are the number of events after implementation 
of event cuts.

2. Did you consider the effect of pile-up and bad runs. If not, do you 
plan to include such in the future analysis?
27 GeV:
Bad runs are removed using Strefmultcorr class and pile event also 
removed using tofmult and tpcmult correlation plot which is also 
implemented in the strefmultcorr class for 27 GeV.

54 GeV:
Here also we have removed bad runs and pile-up events based on study 
done by Shaowei Lan
link: 
https://drupal.star.bnl.gov/STAR/system/files/20181017_Centrality.pdf

3. I think the Nhits/hitmax > 0.52 cut can be removed to gain more 
statistics for this precision analysis.

I will implement this in my future analysis.

4. For 27 GeV analysis, a while ago Risa presented Ψ2 event plane 
resolution for her study, can you please cross-check if your resolution 
numbers are consistent (at least in the same ballpark) with what she 
got.

In the presentation, I have shown the sub event plane resolution. But in 
the reference it’s the full event plane resolution.

Thank You
Prabhupada Dixit