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Re: [[Star-cf-l] ] Notes for PWGC preview (07/19/2024): Measurements of Proton−Proton, Proton−Λ and Proton−Ξ- Correlation Functions in sqrt{sNN} = 3 GeV Au+Au Collisions at RHIC

From: 傅川 <fuchuan AT impcas.ac.cn>
To: star-cf-l AT lists.bnl.gov
Cc: "Hanna Paulina Zbroszczyk" <hanna.zbroszczyk AT pw.edu.pl>, nxu <nxu AT lbl.gov>
Subject: Re: [[Star-cf-l] ] Notes for PWGC preview (07/19/2024): Measurements of Proton−Proton, Proton−Λ and Proton−Ξ- Correlation Functions in sqrt{sNN} = 3 GeV Au+Au Collisions at RHIC
Date: Tue, 15 Oct 2024 21:36:33 +0800 (GMT+08:00)

Dear Hanna,
We would request GPC about the paper
"Measurements of Proton−Proton, Proton−Λ and Proton−Ξ- Correlation Functions
in sqrt{sNN} = 3 GeV Au+Au Collisions at RHIC"
Please kindly find the following document:
1) Paper draft:

https://drupal.star.bnl.gov/STAR/system/files/3GeV_pp_pL_pXi_CF_PaperDraft_v1.pdf
2) Supplemental materials:
https://drupal.star.bnl.gov/STAR/system/files/Supplemental_materials_v1.pdf
3) Analysis note:

https://drupal.star.bnl.gov/STAR/system/files/Analysis_note_3GeV_pp_pL_pXi_CF_v1.pdf
4) Response to PWGC preview:
https://drupal.star.bnl.gov/STAR/system/files/PWGC-response_0.pdf

Please let us know if you have any comments and suggestions.

Best and regards,
Chuan for the PAs

> -----原始邮件-----
> 发件人: 傅川 <fuchuan AT impcas.ac.cn>
> 发送时间: 2024-10-01 23:11:01 (星期二)
> 收件人: star-cf-l AT lists.bnl.gov
> 抄送: "Hanna Paulina Zbroszczyk" <hanna.zbroszczyk AT pw.edu.pl>, nxu
<nxu AT lbl.gov>
> 主题: Re: [[Star-cf-l] ] Notes for PWGC preview (07/19/2024): Measurements
of Proton−Proton, Proton−Λ and Proton−Ξ- Correlation Functions in sqrt{sNN} =
3 GeV Au+Au Collisions at RHIC
>
> Dear Convenors and All,
>
> The following documents are ready for PWG review and please
find them below:
> Paper website:
> https://drupal.star.bnl.gov/STAR/blog/fuchuan/Baryon-Baryon-CF-3GeV-0
>
> 1) Paper draft:
>
https://drupal.star.bnl.gov/STAR/system/files/3GeV_pp_pL_pXi_CF_PaperDraft_v1.pdf
> 2) Supplemental materials:
>
https://drupal.star.bnl.gov/STAR/system/files/Supplemental_materials_v1.pdf
> 3) Analysis note:
>
https://drupal.star.bnl.gov/STAR/system/files/Analysis_note_3GeV_pp_pL_pXi_CF_v1.pdf
> 4) Response to PWGC preview:
> https://drupal.star.bnl.gov/STAR/system/files/PWGC-response_0.pdf
>
> Your comments/suggestions are helpful for us and,
> we would appreciate if you could take a look at those documents.
>
> Thank you and best regards,
> Chuan, Zhi and Yingjie for the PAs
>
> -----原始邮件-----
> 发件人:"Sooraj Radhakrishnan" <skradhakrishnan AT lbl.gov>
> 发送时间:2024-07-23 02:40:31 (星期二)
> 收件人: "STAR Papers Discussion List" <starpapers-l AT lists.bnl.gov>, "STAR
Correlations and Fluctuations PWG" <star-cf-l AT lists.bnl.gov>
> 抄送:
> 主题: [[Star-cf-l] ] Notes for PWGC preview (07/19/2024): Measurements of
Proton−Proton, Proton−Λ and Proton−Ξ- Correlation Functions in sqrt{sNN} = 3
GeV Au+Au Collisions at RHIC
>
> Date: 07/19/2024
>
> Participants: Chuan Fu, Ke Mi. Yingjie Zhou, Youquan Qi,Zhi, Qin, Jae
Nam, Hanna Zbroszczyk,Prithwish Tribedy, Subhash Singha, Isaac Mooney, Nihar
Sahoo,Yi Yang, Shuai Yang, Yue Hang Leung, ShinIchi Esumi, Sooraj
Radhakrishnan
>
> Title: Measurements of Proton−Proton, Proton−Λ and Proton−Ξ- Correlation
Functions in sqrt{sNN} = 3 GeV Au+Au Collisions at RHIC
> PAs: X. Dong, C. Fu, X.F. Luo, K. Mi, Z. Qin, Y.Q. Qi, S.S. Shi, Y.P.
Wang, N. Xu, Z.G. Xiao, Y.J. Zhou
> Target journal: PRL
> Proposal page:
https://drupal.star.bnl.gov/STAR/blog/fuchuan/Baryon-CF-paper-3-GeV
> Presentation:
https://drupal.star.bnl.gov/STAR/system/files/Measurements_pp_pLam_pXi_CF_PWGC_2024_v1.pdf

>
> The PWGC panel previewed a paper proposal from CFPWG. The panel found
that the analysis is mature and results are important and interesting, and
the paper should move forward. The journal choice was also found to be
appropriate. The following points were discussed.
>
> Q: On S.8, what are the correlation functions used for the evaluation of
feed down contributions?
> A: For p - Lambda correlations, these are using p - Sigma correlations
from model calculations (S.26)
>
> Q: Is there a model uncertainty in evaluation of feed-down contribution?
Do you use more than one model?
> A: For p+p, the contribution is very small. For p - Lambda we use
different models. For the feed-down fractions we use values from thermal
model and UrQMD
>
> Q: What are the feed-down fraction for protons and Lambda at 3 GeV?
> A: This is shown on S.26, for Lambda the feedodown fraction is 30%
>
> Q: For p - Lambda, the UrQMD has much different radius than in data. But
in Fig.2, the correlation function from UrQMD is very close to that in data.
Why is this so?
> A: There is difference between L-L fit and UrQMD in Fig.2. The data -
UrQMD difference can also be seen on S.29
>
> Q: On S.8, what are a and b for the merged pair rejection?
> A: These are cuts in Delta phi and Delta ets. The values of a and b are
different for different analyses. More details can be found in S.19. These
are varied for systematic uncertainty evaluation
>
> Q: On S.12, do you have the chi2 for these fits?
> A: The chi2/ndf are shown on S.23. It is around 3.
> Q: Isn't this large?
> A: The contour of variation corresponds to the contour plots in Fig.3.
The quoted fit parameters have the minimum chi2/ndf
>
> Q: On Fig.1, the acceptances are slightly different for p-p and
p-Lambda, and also different for p-Cascade. Does this make an impact on
extracted values?
> A: For p-p, we change the minimum pT cut from 0.4 GeV/c to 0.5 GeV/c.
The difference in correlation functions are very small. For p-Cascade, we
have to use the acceptance because of limited statistics
>
> Q: The momentum smearing correction is listed as largest contributor to
systematic uncertainties. How is this evaluated?
> A: We smear the data with the momentum resolution from embedding and
evaluate the impact. This is discussed on S.20
>
> Q: Are there any constraints on f0 or d0 when doing L-L fits?
> A: No, there are no constraints?
> Q: Are the extracted f0 and d0 for p-Lambda consistent with that shown
in QM preliminary?
> A: Yes, the values and errors are consistent
>
> C: The extracted f0, d0 values, particularly for p-p are very precise.
This can be highlighted in the abstract
> A: Yes, we will consider
>
> Q: We have measurements of other nucleon-nucleon and nucleon-hyperon
correlations. Why are they not discussed in this paper?
> A: These measurements are not published and its not clear which analyses
will be published first
>
> Q: In Fig.4, is the one labelled PRC from measurement?
> A: Yes, this is from low energy scattering measurement
> C: In that case, would be good to label clearly
> A: Yes, will change
>
> Q: Does ALICE have measurements of p-p, p-Lambda?
> A: No. These are the first measurements
>
> Q: In the abstract it is mentioned that the measurements can constrain
the interactions in neutron stars, but the densities are very different. How
do you address this? Should this be in the abstract?
> A: The measurements can still offer constraints to model calculations.
We think it is good to have in the abstract
>
> Q: Can we compare to previous measurements of proton - Omega and Lambda
- Lambda correlations in Figure 4?
> A: We want to focus on the high precision measurements from this
analysis on Fig.4
>
> --
> Sooraj Radhakrishnan
> Research Scientist,
> Department of Physics
> Kent State University
> Kent, OH 44242
>
> Physicist Postdoctoral Affiliate
> Nuclear Science Division
> Lawrence Berkeley National Lab
> MS70R0319, One Cyclotron Road
> Berkeley, CA 94720
> Ph: 510-495-2473
> Email: skradhakrishnan AT lbl.gov
>
>
>
</star-cf-l AT lists.bnl.gov></starpapers-l AT lists.bnl.gov></skradhakrishnan AT lbl.gov>
</nxu AT lbl.gov></hanna.zbroszczyk AT pw.edu.pl></fuchuan AT impcas.ac.cn>

Re: [[Star-cf-l] ] Notes for PWGC preview (07/19/2024): Measurements of Proton−Proton, Proton−Λ and Proton−Ξ- Correlation Functions in sqrt{sNN} = 3 GeV Au+Au Collisions at RHIC, 傅川, 10/01/2024
- Re: [[Star-cf-l] ] Notes for PWGC preview (07/19/2024): Measurements of Proton−Proton, Proton−Λ and Proton−Ξ- Correlation Functions in sqrt{sNN} = 3 GeV Au+Au Collisions at RHIC, 傅川, 10/15/2024