STAR Flow, Chirality and Vorticity PWG

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

Hi Chunjian,
  It seems not all of my comments were addressed:
https://drupal.star.bnl.gov/STAR/system/files/DNP_Oct_STAR_SBU_ChunjianZhang_v2.pdf

For example,
> > slide#2:
> > "The shape of the size of the overlap is directly controlled by the
> > shape..colliding nuclei" --> "The shape and the size of the overlap
> > is controlled by the shape...colliding nuclei, most dominantly in
> > central collisions."

> > slide#4:
> > Equation of "R_\perp^2 = <x^2> +<y^2> =<...>" I don't understand how
> > this works. The term inside <...> is dimensionless because spherical
> > harmonics are dimensionless where as R, x, y are not. Something is
> > missing here.


 Are you still working on a revised draft?
Best,
Prithwish


On 2021-10-06 11:49, ShinIchi Esumi via Star-fcv-l wrote:
> Dear Chunjian
> Thanks for the nice presentation. Although I’ve already signed off,
> I have a few more
> questions and suggestions.
>
> Why don’t you start your x-axis (Nch_corr) from zero for page 7 and
> 8? Any reason
> to exclude a first few points as you are starting from 20 in stead of
> 0? If not, please
> start from 0. Even if you do need to exclude a first few points from
> the plots, I would
> still start the x-axis from 0.
>
> The plot on the page 8 is very good to show the experimental data with
> emphasized
> "large and clear solid" symbol, however it is not the case in the
> plots on page 7, where
> the experimental data are not really clearly shown, so could you
> please make it (STAR
> Data) clear with "larger and solid symbol", while the other model
> points with "smaller
> and open symbols"?
>
> If the Ntrk_offline definition shown in your backup is mostly same as
> your Nth_corr,
> it would still be good to show this "multiplicity ratio" also in the
> plots in page 7 and 8,
> although we do not yet know how to compare/interpret, maybe just with
> a thin line
> with excluding the connecting lines between points that you now have
> in your page 7.
> I would still like to see your Nth_corr distribution overlaid with the
> published Ntrk_offline
> distribution to confirm these, if they are different, I do agree that
> it does not make sense
> to overlay the multiplicity ratio on page 7 and 8.
> Best regards, ShinIchi
>
> > On Oct 6, 2021, at 23:34, Chunjian Zhang
> > <chun-jian.zhang AT stonybrook.edu> wrote:
> >
> > Dear Shinlchi,
> >
> > Hello. Thank you for your nice comments and suggestions. I also
> > include your comments with the updated version in
> https://drupal.star.bnl.gov/STAR/system/files/DNP_Oct_STAR_SBU_ChunjianZhang_v1.pdf
> > I also update the new plots.
> >
> > > On Oct 5, 2021, at 11:51 PM, ShinIchi Esumi via Star-fcv-l
> > > <star-fcv-l AT lists.bnl.gov> wrote:
> > >
> > > Dear Chunjian
> > > I would also sign off your nice DNP presentation with a few
> > > comments.
> > > 1) I would also like to see the ratio of RefMult in the page 7 in
> > > addition to your page 8.
> > Finally we may not include the Nch distribution in the outside.
> > This may be accidental. I have no idea how to connect it right now.
> > We need to dig it out with more studies and insights
> > Please find the plots below
> > <PastedGraphic-1.png>
> >
> > > 2) I thought you were also requesting preliminaries for v2, v3 and
> > > 2nd and 3rd order normalized
> > > mean pT fluctuation before making their ratios. If so, we could
> > > have them in the backup?
> >
> > I did not request them separately. I only need the ratio for my talk
> > presently and the ratio is totally robust.  We do not need to worry
> > anything.
> >
> > > 3) I would also have original RefMult distributions somewhere at
> > > least in your back-up?
> > I include the published CME refmult in my backup slide
> >
> > > 4) Please prepare a set of preliminary plots in one page so that
> > > we can include in the DB.
> >
> > I will do it as soon as possible. Thank you for your kind reminder.
> >
> > > Best regards, ShinIchi
> > Best regards
> > Chunjian
> >
> > On Oct 6, 2021, at 10:46, Prithwish Tribedy via Star-fcv-l
> > <star-fcv-l AT lists.bnl.gov> wrote:
> >
> > Hi Chunjian,
> > Nice slides:
> https://drupal.star.bnl.gov/STAR/system/files/DNP_Oct_STAR_SBU_ChunjianZhang_v0.pdf
> > Please see my comments below. With these included, I sign-off.
> >
> > slide#1:
> > I think it's always a great idea to spell out your institution name
> > below your name. Also your name doesn't have to be written in too
> > small font like you have now.
> >
> > slide#2:
> > The right most cartoon is not "Freeze Out" its more like "Detection"
> >
> > slide#2:
> > "pressure gradient forces" --> "pressure gradients"
> >
> > slide#2:
> > "The shape of the size of the overlap is directly controlled by the
> > shape..colliding nuclei" --> "The shape and the size of the overlap
> > is controlled by the shape...colliding nuclei, most dominantly in
> > central collisions."
> >
> > slide#3:
> > In the equation of \rho(r,\theta,φ), a parenthesis ")" is missing
> > in the exponential.
> >
> > slide#3:
> > "Final Particle Flow" --> "Produced Particle Flow"
> >
> > slide#3:
> > "Harmonic flow" --> "Anisotropic flow"
> >
> > slide#4:
> > "is just shape" --> "is related to the shape"
> >
> > slide#4:
> > "Harmonic flow" --> "Harmonic flow coefficient"
> >
> > slide#4:
> > This sentence is unclear: "R_\perp is related to Y_2^0 projected to
> > the transverse plane". R_\perp is related to which aspect of Y_2^0?
> > It's magnitude ?
> >
> > slide#4:
> > Equation of "R_\perp^2 = <x^2> +<y^2> =<...>" I don't understand how
> > this works. The term inside <...> is dimensionless because spherical
> > harmonics are dimensionless where as R, x, y are not. Something is
> > missing here.
> >
> > slide#4:
> > Please increase the font of the sentence starting with "fluctuation
> > of ...."
> >
> > slide#5:
> > Much of what you write on this slide is related to search for CME.
> > The sentence starting with "A precision.." is not needed for your
> > talk. But please somewhere write "Isobar run originally dedicated to
> > CME search". You can also refer to Sergei's talk for more details
> > but that is optional.
> >
> > slide#6:
> > "Deviate from unity from mid-central" --> "Deviate from unity in
> > mid-central collisions"
> >
> > slide#6:
> > "Request for more and finer bins" --> "Goal is to explore this in
> > finer bins of multiplicity"
> >
> > slide#7:
> > "deformation using heavy ion collisions" -->"deformation in heavy
> > ion collision measurements"
> >
> > slide#8:
> > Title "variance ratio" --> "[pT]-variance ratio"
> >
> > slide#8:
> > "also could be used in conjunction with anisotropy" -->"could also
> > be used in conjunction with anisotropic"
> >
> > slide#9:
> > "The large difference of v_2 and v_3 suggests" --> "The large
> > difference of v_2 and v_3 in central isobar collisions"
> >
> > slide#9:
> > "[pT] fluctuations also could be used in conjunction with anisotropy
> > flow on the deformation study conclusion are consistent"
> > -->
> > "[pT] fluctuations also sensitive to deformation study leads to
> > consistent conclusion:"
> >
> > slide#9:
> > "Opportunity to study on nuclear structure at a much shorter scale
> > (~10^-24 s)"
> > -->
> > "Opportunity to study nuclear structure at very short time scale
> > (~10^-24 s) accessible through heavy ion collisions"
> >
> > slide#9:
> > "A lot of possibility for scan." -->"A future deformed-system scan
> > will be ideal."
> >
> > slide#9:
> > "But need to first establish the heavy ion systematics using species
> > with known deformation"
> > -->
> > "Species with well known deformation will be useful to better
> > understand the systematics and establish the efficacy of this
> > approach"
> >
> > Best,
> > Prithwish
> >
> > On 2021-10-01 17:46, webmaster--- via Star-fcv-l wrote:
> > Dear star-fcv-l AT lists.bnl.gov members,
> > ChunJian Zhang (chun-jian.zhang AT stonybrook.edu) has submitted a
> > material for
> > a review, please have a look:
> > https://drupal.star.bnl.gov/STAR/node/56634
> > ---
> > If you have any problems with the review process, please contact
> > webmaster AT www.star.bnl.gov
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