STAR Correlations and Fluctuations PWG

["Hu, Yu" <yuhu AT bnl.gov>]

Dear Hanna, Toshihiro, and All,

Thanks for all the comments and suggestions for today.

I tried to include all of them in my slides. Please find the updated version from the link below.

https://drupal.star.bnl.gov/STAR/system/files/QM23_20230906_YuHu_pL_dL_v11.pdf

Please let me know if there are further comments, I will keep improving the slides.

Thanks again.

Best,

Yu

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From: Star-cf-l <star-cf-l-bounces AT lists.bnl.gov> on behalf of Hu, Yu via Star-cf-l <star-cf-l AT lists.bnl.gov>
Sent: Tuesday, August 29, 2023 1:09
To: star-cf-l AT lists.bnl.gov <star-cf-l AT lists.bnl.gov>
Cc: Hu, Yu <yuhu AT bnl.gov>
Subject: Re: [Star-cf-l] STAR presentation by Yu Hu for Quark Matter 2023 submitted for review

 

Dear Hanna, Toshihiro, and all,

Thanks for the nice suggestions and comments, sorry for taking so long to reply.

I realized the text in my slides was a little bit too dense, so I made many changes in the presentation to make it more smooth.

The idea is to try to only list the keywords in the text instead of the complete sentence, so people can focus on the key points, and follow my speech instead of reading the text.

I applied most of your comments and put my replies for the rest. 

Please find my slide from the link below.

https://drupal.star.bnl.gov/STAR/system/files/QM23_20230906_YuHu_pL_dL_v8.pdf

Besides, we identified a problem in my previous H3L contribution, which made us roughly underestimate the H3L contribution by 33%.
I prepared a document to explain what I did wrong, and what has been changed in the new plots. 

https://drupal.star.bnl.gov/STAR/system/files/dLambda-20230827-YuHu.pdf

All the plots, fittings, and numbers in the latest QM slides are updated with the new H3L contribution.

Thank you and see you soon in Houston!

Best,

Yu

--------------------------------------------------------------------------

Dear Yu,

I have a few minor comments on your nice slides.

With these and Hanna’s comments implemented, I sign off.

Best regards,

Toshihiro

S2: Heavy-ion collisions

Yu: The text has been changed.

S9: The resolution of the figure looks worse than those in other slides. Please try to improve it.

Yu:  I have updated a new plot.

S12: spin-averaged fit -> Spin-averaged fit

Yu: Fixed.

S15: in heavy-ion collisions from

Yu: Fixed.

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From: Star-cf-l <star-cf-l-bounces AT lists.bnl.gov> on behalf of Hanna Paulina Zbroszczyk via Star-cf-l <star-cf-l AT lists.bnl.gov>
Sent: Friday, August 25, 2023 5:42
To: star-cf-l AT lists.bnl.gov <star-cf-l AT lists.bnl.gov>
Cc: Zbroszczyk Hanna <hanna.zbroszczyk AT pw.edu.pl>
Subject: Re: [Star-cf-l] STAR presentation by Yu Hu for Quark Matter 2023 submitted for review

 

Dear Yu,

Please find my comments on your nice talk. Some of them came after yesterday's meeting.

Slide 2:

I suggest adding at least a short discussion (and some figure or figures) describing the NS puzzle, explaining briefly why N-N and N-Y interactions are relevant to provide a hint towards EoS for NS. I also propose that the lowest STAR energies lie on the QCD phase diagram closer to the area describing NS that LHC and top RHIC.

Yu: Sure, my plan is actually to quickly go through the NS puzzles, and try to make the slides as simple as possible. So I simplified the text. Since none of the colliders can actually study the NS region, I will just point out this is a "laboratory for dense QCD matter".  And I also make the arrow point to critical points now, hope this looks better now 🙂.

Slide 3:

As I mentioned yesterday, using PRF, k*defines the first momentum in the pair. Please make sure that all symbols you use are consistent with their definitions.

There is no need to spend any time to introduce all these variables during your talk. However, I suggest defining all symbols and variables you mention in this slide.

Points of your emission seem to be outside of the source. I suggest moving them and to describe as x_1 and x_2

Yu: Thanks for the comments, I added a line on * is pair rest frame, and modified the L-L page accordingly.

I zoomed the carton of the emission source a little bit, now it should cover the particles.

I need your comment about what do you mean by "three-body"? Do you treat d-\La as (p+n)-\La? Do you mean to consider interactions between p and n? I think you treat d as a point object. We need to understand what do you mean to be at the same page.

Yu: I was trying to say "d-L" has some information about 3-body since d is a p and n. 

But you are right, I don't think currently we can do anything or even say anything about it. 

I modified the text into N(-N)-Y, just to remind people there is information inside it. 

Slide 5:

3 GeV -> \sqrt{s_{NN}} = 3 GeV (twice)

Gev -> GeV (bottom-left figure)

When you mention the high statistics you use, you can mention what exactly to you mean in M.

Yu: I plan to put the text as short as possible, and match one line. I believe everyone knows it is sqrt(s_NN), so I removed it.

And yes, I added the number of events in the text.

Slide 7:

About corrections, why not mention those when you briefly discuss systematics (later)?

Make sure you define all symbols used here.

The same comment about emission points as on slide 3.

Yu: I think I will quickly go through the corrections usually do, so the later slides I can focus on the physics. 

Let's give it a try for now, If the rehearsal doesn't sound good in this way, I will change it into another style.

Slide 8:

I suggest to change corrections -> systematic uncertainties. Please separate statistical and systematic uncertainties, if possible..

Yu: The reason I put "correction" is because most of the items changed the central point not systematical error. 

I think correction may be better here. 

Slide 9:

Again, my recommendation is Corrections -> Systematics.

Extracted parameters are still missing..

Yu: I updated the number with our latest fitting results.

Slide 10:

Please check the numbers below k* = 100 MeV/c.. It looks as normalization issues.

Yu: The H3L will not be like C(k*) goes to 1 at large k*, it has a peak around 40 MeV and goes 0 around 60 MeV

So after scaling by the experimental mixed events, it is like this way. 

Following slides with results: writing for your fitting updates. Please replace these figures as soon as possible.

Summary and outlook:

Please consider writing shorter bullets with main physics conclusions instead of whole sentences.

Yu: Thanks, I have updated the results and simplified my summary slides.

Waiting for your updates,

Thanks,

Hanna

Hanna Paulina Zbroszczyk

PhD DSc Eng, Professor WUT

E-mail: hanna.zbroszczyk AT pw.edu.pl

Tel: +48 22 234 5851 (office)

Address:

Warsaw University of Technology

Faculty of Physics

Nuclear Physics Division

Koszykowa 75

Office: 117b (via 115)

00-662 Warsaw, Poland

Wiadomość napisana przez webmaster--- via Star-cf-l <star-cf-l AT lists.bnl.gov> w dniu 22.08.2023, o godz. 11:01:

Dear star-cf-l AT lists.bnl.gov members,

Yu Hu (yuhu AT bnl.gov) has submitted a material for a review, please have a  
look:
https://drupal.star.bnl.gov/STAR/node/64804

Deadline: 2023-09-03
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