STAR Correlations and Fluctuations PWG

[Kincses Dániel <kincses AT ttk.elte.hu>]

Dear Hanna,

Thank you, I will continue these comparisons after the preliminary approval when the results move toward a paper proposal.

Thanks,
Daniel

---

Feladó: Star-cf-l <star-cf-l-bounces AT lists.bnl.gov>, meghatalmazó: Hanna Paulina Zbroszczyk via Star-cf-l <star-cf-l AT lists.bnl.gov>
Elküldve: 2023. július 14., péntek 15:31
Címzett: star-cf-l AT lists.bnl.gov <star-cf-l AT lists.bnl.gov>
Tárgy: Re: [Star-cf-l] CF PWG meeting, July 13th, 2023, time: 9:00 (BNL time)

 

Dear Mate, Daniel, All,

We now talk about preliminary labels granted for some data points. 

Here, as I mentioned before, taking into account the current state of the analysis, we can move forward.

For the publication, we need to ensure that within (systematic) uncertainties, all results are consistent with each other. At least, we must ensure consistency within systematic uncertainties with extracted parameters. Having this done, we can move forward. 

Check how much you can find here: https://www.star.bnl.gov/protected/bulkcorr/canson/Paper/LongPaper/

You will find there many supportive materials. 

One idea, of course, can be related to the direct comparison of the 1D correlation function. However, having limited knowledge about previous studies, it helps to calculate the 3D correlation function, and then the direct comparison with the published results will be possible (at least with extracted parameters). 

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 Mate Csanad <csanad AT bnl.gov> w dniu 14.07.2023, o godz. 11:55:

Dear Hanna,

Thank you for your comment; let me add a few thoughts on the "Long HBT paper" comparision issue.

1) Part of the problem is, that there are no published 1d correlation functions in the paper, neither in the analysis note. There exists only one such plot, the one in the PhD thesis of Chris Anson, but not every detail is given there either.

2) The verdict yesterday was that no further time should be spent on this for now, but maybe that was really meant for the preliminary request (Toshihiro can clarify maybe). It would be nice to finalize what would be needed to close this issue.

3) A side-note: agreement with published HBT radii was demonstrated for forced Gaussian fits of Daniel. At that time the PWG conclusion was that this is good, but also agreement of correlation functions should be checked.

4) For the future publication of Daniel's work, I can imagine a few directions of this cross-check:
a) comparing to published 3D correlation functions (the drawback there is that there are many additional settings there, first and foremost the projection method and window, but also phi window application; which you need to reproduce exactly, and there may be lack of info on some of these)
b) comparing to some currently running or recently finished identical particle femtoscopy analysis, where the PA would be kind enough to produce a 1D correlation function (the drawback there is that this can only happen at a very low energy, or for kaons/protons, which again reduces the relevance for checking Daniel's analysis; except maybe Yevheniia's analysis, where she may have 200 GeV correlation functions available, with well known settings).

In summary, I guess the idea is that we come back to this point when the analysis progresses towards a paper proposal; but in the meantime, if you, or Toshihiro, or anyone has an idea for any other correlation function comparisions, some particular figure in a particular publication, etc, please let us know.

Best regards,
Mate

2023. 07. 14. 10:58 keltezéssel, Hanna Paulina Zbroszczyk via Star-cf-l írta:

Dear Daniel,
I went through your slides from yesterday’s meeting.
I am trying to understand the discrepancies between your results from Run-10 and those published a few years ago Phys. Rev. C *92* (2015) 14904.
We need to understand the selection criteria at each level of your analysis: event, track, pair.
I believe you accessed this website, just in case you did not:
https://www.star.bnl.gov/protected/bulkcorr/canson/Paper/LongPaper/ <https://www.star.bnl.gov/protected/bulkcorr/canson/Paper/LongPaper/>
There is also an available Analysis Note.
As I mentioned before, the fitting should include the first points of the correlation function, and the difference should be included in systematics.
I believe that when you apply the Barlov test, the systematic uncertainties of your measurement will decrease.
At this moment, what you have obtained so far is enough to get preliminary labels, but it is necessary to understand discrepancies between your and published results to finish working on purity/momentum smearing correction and the fitting range.
I guess we will have more discussion next week.
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 Kincses Dániel via Star-cf-l <star-cf-l AT lists.bnl.gov> w dniu 13.07.2023, o godz. 11:33:

Dear All,

Please find my slides for today's meeting here:
https://drupal.star.bnl.gov/STAR/system/files/kincsesd_bulkcorr_20230713.pdf <https://drupal.star.bnl.gov/STAR/system/files/kincsesd_bulkcorr_20230713.pdf>

Cheers,
Daniel
--------------------------------------------------------------------------------
*Feladó:*Star-cf-l <star-cf-l-bounces AT lists.bnl.gov <mailto:star-cf-l-bounces AT lists.bnl.gov>>, meghatalmazó: Dylan Neff via Star-cf-l <star-cf-l AT lists.bnl.gov <mailto:star-cf-l AT lists.bnl.gov>>
*Elküldve:*2023. július 13., csütörtök 8:29
*Címzett:*STAR Correlations and Fluctuations PWG <star-cf-l AT lists.bnl.gov <mailto:star-cf-l AT lists.bnl.gov>>; 野中俊宏 <nonaka.toshihiro.ge AT u.tsukuba.ac.jp <mailto:nonaka.toshihiro.ge AT u.tsukuba.ac.jp>>
*Tárgy:*Re: [Star-cf-l] CF PWG meeting, July 13th, 2023, time: 9:00 (BNL time)
Hi All,

I've attached the slides I plan to discuss.


Thanks,
Dylan Neff

On Wed, Jul 12, 2023 at 5:50 PM Dylan Neff <dneffucla AT gmail.com <mailto:dneffucla AT gmail.com>> wrote:

   Hi Hanna/Toshihiro,
   __ __
   I would like to give an update on our analysis of proton fluctuations in
   azimuthal partitions.
   __ __
   __ __
   Thanks,____
   Dylan Neff____
   __ __
   *From:*Kincses Dániel via Star-cf-l <mailto:star-cf-l AT lists.bnl.gov>
   *Sent:*Monday, July 10, 2023 11:04 PM
   *To:*野中俊宏 <mailto:nonaka.toshihiro.ge AT u.tsukuba.ac.jp>;STAR
   Correlations and Fluctuations PWG <mailto:star-cf-l AT lists.bnl.gov>
   *Subject:*Re: [Star-cf-l] CF PWG meeting, July 13th, 2023, time: 9:00 (BNL
   time)
   __ __
   Dear Conveners,____
   __ __
   I would like to give an update on the Levy HBT analysis.____
   __ __
   Thanks,____
   Daniel____
   __ __
   <F519D40003954E7A8879085DBBE1729A.png>____
   *Feladó:*Star-cf-l <star-cf-l-bounces AT lists.bnl.gov
   <mailto:star-cf-l-bounces AT lists.bnl.gov>>,野中俊宏via Star-cf-l
   <star-cf-l AT lists.bnl.gov <mailto:star-cf-l AT lists.bnl.gov>> nevében
   *Elküldve:*2023. július 11., kedd 3:17
   *Címzett:*Hanna Paulina Zbroszczyk via Star-cf-l <star-cf-l AT lists.bnl.gov
   <mailto:star-cf-l AT lists.bnl.gov>>
   *Tárgy:*[Star-cf-l] CF PWG meeting, July 13th, 2023, time: 9:00 (BNL time)____
   __ __
   Dear CF Activists,____
   __ __
   We will have our weekly CF PWG meeting on *Thursday, July 13th, 9:00
   AM*(BNL time). ____
   __ __
   If you would like to contribute, please let us know.____

   Please try to post your slides at your earliest convenient.
   We will connect via Zoom. Please find the connection details under the
   meeting webpage.____

   Thank you,
   Best regards,
   Hanna and Toshihiro

   https://drupal.star.bnl.gov/STAR/blog/luoxf/correlations-and-fluctuations
   <https://drupal.star.bnl.gov/STAR/blog/luoxf/correlations-and-fluctuations>
   https://drupal.star.bnl.gov/STAR/blog/gos/correlations-and-fluctuations-preliminary-plots <https://drupal.star.bnl.gov/STAR/blog/gos/correlations-and-fluctuations-preliminary-plots>____
   __ __
   __ __
   __ __

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