STAR Flow, Chirality and Vorticity PWG

[Chunjian Zhang <chun-jian.zhang AT stonybrook.edu>]

Dear Prithwish,

Thank you for kind comments. Sorry I missed these two and include the in https://drupal.star.bnl.gov/STAR/system/files/DNP_Oct_STAR_SBU_ChunjianZhang_v2.pdf

Also I went through it again and  fixed another nice comments. Please find them below. 

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#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.

1)Isobar run originally dedicated to CME search

2)

 include Sergei’s talk with a short index .

Session CA(Oct. 11): CME search at STAR (Sergei A Voloshin )

Done 

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#9:
"A lot of possibility for scan." -->"A future deformed-system scan will be ideal."

Done 

Thank you so much. I missed the <r^2>. You are totally correct. Now I changed the formular using approximation.  <R^2> = <x^2>+<y^2> = 2/3<r^2*(1-2….)> \propto 2/3<(1-2….)> 

 I think I include all your nice suggestions and comments.  Your kind suggestions and comments are welcome. 

Best regrads

Chunjian 

On Oct 6, 2021, at 3:24 PM, Prithwish Tribedy via Star-fcv-l <star-fcv-l AT lists.bnl.gov> wrote:

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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