STAR Correlations and Fluctuations PWG

[Mate Csanad <csanad AT bnl.gov>]

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>____
> >     __ __
> >     __ __
> >     __ __
> >
> > _______________________________________________
> > Star-cf-l mailing list
> > Star-cf-l AT lists.bnl.gov
> > https://lists.bnl.gov/mailman/listinfo/star-cf-l
>
>
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