STAR Flow, Chirality and Vorticity PWG

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

Dear Haojie, 

Hello. It’s a very nice result from hydro and I am looking forward to your 
nice draft. Thank you~

best regards
Chunjian 

> On Mar 29, 2022, at 8:46 PM, haojiexu <haojiexu AT rcf.rhic.bnl.gov> wrote:
> 
> Dear Chunjian,
> 
> Thank you for considering my suggestion. Actually, our hydrodynamics give 
> the same conclusion that the two system have the same nonlinear 
> coefficients within error, while the approximation can bias this 
> conclusion. It is good to hear that the data show the same trend.
> It is interesting that the magnitude of this bias can be quantitively 
> described by our hydrodynamic simulaitons, this may indicate the non-flow 
> contributions are largely canceled in the ratios.  Attached please find 
> plot from our recent work that we plan to submit to arXiv in the next few 
> days.
> 
> with best regards,
> Haojie
> 
> 
> 
> On 2022-03-30 07:50, Chunjian Zhang wrote:
>> Dear Haojie,
>> Hello. Very nice and comprehensive slides to me.
>> Thank you for your nice suggestions. Now we use the exact
>> ac2{3}/<v_2^4> ratio between Ru+Ru and Zr+Zr collisions as the
>> equations.
>> Please find the new plot in
>> https://drupal.star.bnl.gov/STAR/system/files/ac23_STAR_0329.pdf  It
>> will be helpful if you could use this new plot to replace the old
>> version in the slide 12. And also change the third bullet point to
>> “Non-linear coefficents are ideally identical in the
>> final-state””. Thank you.
>> The nonflow would be mostly canceled and then will not affect the
>> double ratios in the lower panel especially from midcentral to central
>> collisions.  If it still has residual nonflow, it may only affect
>> peripheral region a little bit. The model study here also helps us to
>> clarify this.  Even so, the futher relevant nonflow understanding is
>> ongoing in our to do list.
>> best regards
>> chunjian
>>> On Mar 29, 2022, at 1:07 AM, haojiexu <haojiexu AT rcf.rhic.bnl.gov>
>>> wrote
>>> Hi Chunjian, and all
>>> Your nice suggestions are implemented, here is the updated slides
>> https://drupal.star.bnl.gov/STAR/system/files/QM2022_HaojieXu_v10.pdf
>>> I am still worried about the message from lower panel of ac3 plot.
>>> Besides the non-flow effect, as I have already mentioned, the
>>> ac2{3}/v_2{2}^{4} is not exactly the non-linear coefficient.  As it
>>> was just an approximation, I suggest not to extract any nonlinear
>>> coefficient at this moment. Or can you directly compare ac2{3} to
>>> <v_2^{4}> instead of v_2{2}^{4}?
>>> with best regards,
>>> Haojie
>>> On 2022-03-29 04:56, Chunjian Zhang wrote:
>>> Dear Haojie,
>>> Hello. Very nice and comprehensive slides. Please find some comments
>>> below:
>>> 1) S3:
>>> —>  v2-> v_{2}
>>> —> I guess you would like to use the new Ntrk ratio plot from the
>>> nice
>>> isobar publication.
>>> 2) S9: It would be helpful if you could add one more reference:
>>> J.Jia
>>> and C. Zhang, arXiv:2111.15559
>>> 4) S12:
>>> —> above formula, n=2, just label ac_2{3}….
>>> —> I would be helpful you could add a punchline as other slides
>>> at
>>> below: “Experimental test on non-linear coupling coefficient”.
>>> Thank you for your suggestions for the plots. The double ratio
>>> is
>>> the money plot calculated from above panels. Then the audiences
>>> would
>>> see how is the difference directly. Also, ampt calculation could
>>> reproduce the data. The detailed nonflow studies for understanding
>>> any
>>> flow observables are extramly complicated and there are no any
>>> conclusive answers yet. let’s not worry about it.
>>> best regards
>>> Chunjian
>>> On Mar 28, 2022, at 11:22 AM, haojiexu via Star-fcv-l
>>> <star-fcv-l AT lists.bnl.gov> wrote:
>>> Dear chunjian, and all
>>> The slides have been updated with suggestions from the last FCV
>>> meeting and Collaboration meeting. I also made a few minor changes.
>>> Your comments are welcome. Here is the link to my slides
>>> https://drupal.star.bnl.gov/STAR/system/files/QM2022_HaojieXu_v9.pdf
>>> I have a suggestion on ac2{3} plot in slide 12. I suggest do not
>>> show the lower panel and the value of the non-linear coefficient
>>> ratio, because the ac2{3}/v_2{2}^{4} is not exactly the non-linear
>>> coefficient, and ac2{3} is also sensitive to non-flow effect.
>>> with best regards,
>>> Haojie
>>> On 2022-03-08 23:55, webmaster--- via Star-fcv-l wrote:
>>> Dear star-fcv-l AT lists.bnl.gov members,
>>> Haojie Xu (haojiexu AT zjhu.edu.cn) has submitted a material for a
>>> review,
>>> please have a look:
>>> https://drupal.star.bnl.gov/STAR/node/58778
>>> ---
>>> If you have any problems with the review process, please contact
>>> webmaster AT www.star.bnl.gov
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> <Chi.pdf>