STAR Flow, Chirality and Vorticity PWG

["Zuowen Liu" <zuowen.liu AT qq.com>]

Dear Subhash,

Thanks a lot for your quick reply.

Kindly find the answers in the slides attached.

Thank you.

Best regards,

Zuowen for PAs

 

 

------------------ Original ------------------

From:  "subhash"<subhash AT rcf.rhic.bnl.gov>;

Date:  Thu, Apr 18, 2024 01:46 PM

To:  "Zuowen Liu"<liuzw AT mails.ccnu.edu.cn>;

Cc:  "star-fcv-l"<star-fcv-l AT lists.bnl.gov>;

Subject:  Re: [Star-fcv-l] Kaon anti-flow paper draft and analysis notes for PWG review

 

Dear Zuowen,

Thanks for your response. I have a few follow up questions/comments:

1) Kaon v1: your negative kaon points especially at 3.5 GeV are kind of
fluctuating bin by bin, they look a lot smoother in 3 GeV data. The
systematic is also changing bin-by-bin. Since this paper is focussed on
kaons, I wanted to understand more on this behavior of K+ and K-. How do
you understand the current behavior.
2) Proton v1: I am fine with it, please update all the latest version of
figures.
3) v1 versus invariant mass for kshort: I would suggest to check the
variation with background shape eg first/second order polynomial.
4) incompressibility: do you use K=210 (soft EOS) for all the energies?
If I remember in our prior 3 GeV paper, we used K=380 (I believe hard
EOS).
I would suggest to mention K values used in JAM in the main manuscript.
5) Since you are aiming for a letter, you don't have space. So I
suggested to include event plane resolution and v1 versus pt figures as
a supplemental materials to PRL.
6) around 196-197 of the draft, you should clarify that W/O spectator is
the case where spectator interactions are turned off in JAM.


Thanks and regards,
Subhash


On 2024-04-17 04:09 PM, Zuowen Liu wrote:
> Dear Subhash and All,
>
> Thank you very much for your nice suggestions.
> Please find the answers in the slides attached.
>
> Kindly let us know if you have any further comments or suggestions.
>
> Thanks and Best regards,
> Zuowen for PAs
>
> ------------------ Original ------------------
>
> From:  "subhash"<subhash AT rcf.rhic.bnl.gov>;
> Date:  Sun, Apr 14, 2024 06:28 PM
> To:  "star-fcv-l"<star-fcv-l AT lists.bnl.gov>;
> Cc:  "Zuowen Liu"<liuzw AT mails.ccnu.edu.cn>;
> Subject:  Re: [Star-fcv-l] Kaon anti-flow paper draft and analysis
> notes for PWG review
>
> Dear Zuowen, PAs,
>
> Sorry for the delay. Thanks a lot for circulating this interesting
> paper
> and supporting materials. Overall, we have everything to move forward.
>
> But I have the following question/comments for your consideration:
>
> --------------------------------------------------
> Analysis Note:
>
> Major:
> -- As seen in Fig 59 and 60, the kaon-minus v1 have a discontinuity at
>
> around y_cm ~ -0.7. It is also part of your main figure in paper. What
> I
> remember you have mentioned in some presentation that there was some
> issue in mass-square in eToF. Was it related and can you please remind
>
> me again how it was solved/addressed?
>
> -- page-46: Fig. 65: The proton v1 has a bump structure at around ycm
> ~
> -0.4. How do you understand it? Do you see a same structure for
> lambda?
>
> -- page-11: You should have purity numbers for all your PIDs, please
> add
> them in your note. Note that there was a recent presentation from
> Cameron Racz on the effect of proton purity on v3. Can this affect
> your
> analysis?
>
> -- page-24: Fig. 24: Can you add a few more example figures for your
> v1
> versus invariant mass for kshort and lambda, may be in the Appendix
> section of AN? Please also add discussion how is v1 the background
> shape
> is considered. Have you varied v1^background to get systematic on v1
> for
> kshort and lambda?
> --------------------------------------------------
>
> --------------------------------------------------
> Paper draft:
>
> Major comments:
> -- If I understand correctly, the main selling point of this paper is
> the observation of anti-flow for pions and kaons at low pT. This
> manuscript do not rule out the kaon potential causing anti-flow for
> kaons, but concluded that it could also be driven by nuclear
> shadowing.
>
> abstract: If it is a first time simultaneous observation of anti-flow
> of
> pions/kaons we could probably stress explicitly in the abstract in a
> data driven way (what you did around #l 188-190) and then mention it
> is
> _supported_ by JAM.
> l#16: It is concluded --> It is supported, since you haven't ruled out
>
> kaon potential picture.
> Is there a way in JAM to demonstrate the sign change in pions/kaons
> _solely_ from nuclear shadowing, so that you can rule out one picture.
>
> That might make this paper sending a stronger message.
>
> -- Compared to our 3 GeV PLB paper (2108.00908), what information it
> can
> bring in terms of baryonic mean-field. Because now we have p/lambda v1
>
> for four different beam energies. It could be added in the conclusion,
>
> eg what compressibility values are used.
>
> -- Please double check the Kaon data points at 3.5 GeV as I mentioned
> above.
>
> -- I remember there was some discrepancies in two versions of JAM.
> Which
> version are you using? And it should be pointed out in the manuscript
> if
> results from JAM (version dependent) changed compared to our previous
> publication.
>
> -- You would need a few supplemental figures to discuss on the event
> plane and its resolutions.
>
> -- You could also think about reporting v1 versus pt in your
> supplemental materials.
>
> Minor suggestions:
> -- Please check notations, sometimes you use "protons" some times "p".
>
> For instance l#77
>
> -- Fig. 4: You should mention rapidity coverages inside the figures,
> although you are presenting dv1/dy
> You could draw pi+ as markers, not to confuse with models. You can
> play
> with color coding.
>
> -- l#196: w/O spectator, have you turned off spectator interactions?
> Sorry for my ignorance, but I wanted to understand how it was done in
> JAM.
>
> Thanks and regards,
> Subhash
>
> On 2024-04-08 03:06 PM, Zuowen Liu via Star-fcv-l wrote:
>> Dear Conveners and All,
>>
>> Here we update some materials for PWG review.
>> Please let us know any comments and suggestions you may have.
>> Thank you.
>>
>> -Paper draft:
>> https://drupal.star.bnl.gov/STAR/system/files/Kaon_AntiFlow.pdf
>>
>> -Analysis notes:
>>
> https://drupal.star.bnl.gov/STAR/system/files/analysisnote_kaonantiflow.pdf
>> -Analysis code in rcf:
>> /star/u/liuzw/pwg/kaonAntiflow
>> -Summary page on drupal:
>>
> https://drupal.star.bnl.gov/STAR/blog/liuzw/Paper-proposal-kaon-anti-flow
>> -Replies to pwgc preview comments:
>>
> https://drupal.star.bnl.gov/STAR/system/files/PWGC_preview_kaon_antiflow_ver2.pdf
>>
>> Best regards,
>> Zuowen for PAs
>>
>> ------------------ Original ------------------
>>
>> From:  "Zuowen Liu"<liuzw AT mails.ccnu.edu.cn>;
>> Date:  Wed, Feb 28, 2024 03:47 PM
>> To:  "star-fcv-l"<star-fcv-l AT lists.bnl.gov>;
>>
>> Subject:  Kaon anti-flow paper draft and analysis notes for PWG
> review
>>
>> Dear All,
>>
>> The paper daft and analysis notes for Measurements of Kaon Anti-flow
>> in the High Baryon Density Region from Au + Au Collisions at √sNN
> =
>> 3 - 3.9 GeV are ready for PWG review.
>>
>> -Paper draft:
>> https://drupal.star.bnl.gov/STAR/system/files/Kaon_AntiFlow.pdf
>>
>> -Analysis notes:
>>
> https://drupal.star.bnl.gov/STAR/system/files/analysisnote_kaonantiflow.pdf
>> -Summary page on drupal:
>>
> https://drupal.star.bnl.gov/STAR/blog/liuzw/Paper-proposal-kaon-anti-flow
>>
>> We’re looking forward to your comments and suggestions.
>> Thank you!
>>
>> Best regards,
>> Zuowen for PAs
>> _______________________________________________
>> Star-fcv-l mailing list
>> Star-fcv-l AT lists.bnl.gov
>> https://lists.bnl.gov/mailman/listinfo/star-fcv-l

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