STAR Flow, Chirality and Vorticity PWG

[Egor Alpatov <egroker1 AT gmail.com>]

Hello, Prithwish

Thank you for your comments, I implemented them into presentation and tried to make pictures more readable, please have a look: https://drupal.star.bnl.gov/STAR/system/files/XI_HADRON2021_v1.1.pdf
I also uploaded new preliminary pictures into node with implemented comments: https://drupal.star.bnl.gov/STAR/blog/alpatov/global-hyperons-polarization-auau-54gev

I've checked out previous studies at this energies, and my resolution correction is the same as in Kosuke's studies, but for preliminaries he also applied some ZDC-BBC weighting to BBC event-plane, which I didn't use.
I could use in my presentation old resolution preliminaries instead if it's important, since this weightning impact BBC results for centralities, which I didn't use for those results.

Thank you,
Egor Alpatov

On Tue, Jul 20, 2021 at 7:06 AM Prithwish Tribedy <ptribedy AT rcf.rhic.bnl.gov> wrote:

Hello Egor,
   Sorry for the delay. Very nice slides. Here are my comments. With
these included I sign-off.

Preliminary approval :
1. All plots: The axes labels, tics and legends on your plots are too
small to see.

2. Preliminary plot on resolution: Particularly the rising part for BBC
-- is this consistent with what other see? I know Kosuke and Kishora
looked at 54 GeV data. For example can you please check if your results
compare to what was shown here:
https://drupal.star.bnl.gov/STAR/system/files/polarization_tpc.pdf

3. Preliminary plot on Ξ mass:
Somewhere you have to write it's for Ξ -> Λ + π
You can write: M_{inv} [ Ξ -> Λ + π ] or something like that.
Is this for Ξ or Ξ-bar or sum ? You have mention that.

4. Preliminary plot on EP method:
What is Δφ^{*} is not specified. Is this the x-axis then write
Δφ^{*}=Ψ_1 - φ^* in the x-axis label.

5. Preliminary plot on Energy dependence:
"STAR Preliminary" is missing.
In the legend you write "Preliminary" but I think you have to say "STAR
Preliminary" there.


Talk approval:

slide#4:
emitted in --> emitted along

slide#4:
Ψ_1 and it's resolution --> Ψ_1 and its resolution

slide#4:
The figures need reference

slide#4:
Here you have to say for Ξ, in some cases you measure the polarization
using two methods: "via decay Λ daughter" and "via direct method".

slide#5 (optional comment):
Ξ polarization may provide new input for global polarization and
vorticity studies
-->
Global polarization Ξ may provide new insights on vorticity studies in
heavy ion collisions


slide#6:
Did you miss "Event Plane Detector" ? You used EPDs for 27 GeV analysis
right ?


slide#7:
"Event plane Ψ_1 can be measured spectators signal at high-rapidity
detectors"
-->
"Event plane Ψ_1 can be measured by detectors at forward rapidity where
directed flow is large"

slide#7:
To define "Resolution" you write "EPD" but for 54 GeV you use BBCs this
can create a confusion. Also, East and West are STAR convention. How
about Ψ_{1,Forward η} and Ψ_{1, Backward η}?

And then somewhere on slide#7 you have to write that you use EPD, BBC,
ZDC.

Did you use KF-particles ? If yes it would be good to mention it here.


slide#7:
labels and legends on the plots are very difficult to see.

slide#8: Define Δφ^*.

slide#9:
"polarization congruence at difference collision energies"
You see congruence of what with what?
Did you mean Ξ results show congruence with Λ results ?

Best,
Prithwish





On 2021-07-14 12:14, Egor Alpatov via Star-fcv-l wrote:
> Dear Conveners,
>
> I'd like to remind you about this presentation for HADRON-2021. Your
> comments are welcome.
>
> Thank you,
> Egor Alpatov
>
> вт, 6 июл. 2021 г., 11:31 Egor Alpatov <egroker1 AT gmail.com>:
>
>> Dear Conveners,
>>
>> Here is the link to my preliminary page with plots:
>>
> https://drupal.star.bnl.gov/STAR/blog/alpatov/global-hyperons-polarization-auau-54gev
>> And Note-type-presentation, which I have shown on pwg meeting last
>> time:
>> https://drupal.star.bnl.gov/STAR/system/files/FCV16_06_2021.pdf
>>
>> As we discussed, it would be nice to increase event plane resolution
>> with weightnings and combining detectors. But, as you know, there is
>> a lack of CPU resources now, so I won't be able to do all needed
>> calculations before this conference.
>> Will it be okay to show energy-dependent results only for now, which
>> corresponds with previously shown Quark-Matter preliminaries for
>> Lambda global polarization?
>> And when I'll prepare new Event Planes I'd be able to ask
>> preliminaries for Xi global polarization centrality dependence?
>> We could discuss it at an upcoming pwg meeting, or just by mail.
>>
>> Thank you,
>> Egor Alpatov
>>
>> On Tue, Jul 6, 2021 at 11:24 AM webmaster--- via Star-fcv-l
>> <star-fcv-l AT lists.bnl.gov> wrote:
>>
>>> Dear star-fcv-l AT lists.bnl.gov members,
>>>
>>> Egor Alpatov (egroker1 AT gmail.com) has submitted a material for a
>>> review,
>>> please have a look:
>>> https://drupal.star.bnl.gov/STAR/node/55537
>>>
>>> ---
>>> If you have any problems with the review process, please contact
>>> webmaster AT www.star.bnl.gov
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