STAR Correlations and Fluctuations PWG

[Nu Xu <nxu AT lbl.gov>]

Dear Bijun,

Thank you for the updated draft. I sign off.
There is one small correction in slide 15 - "2) R_G of Kaons don’t follow 
𝐦𝐓-scaling of pions’, “ ==> “2) R_G of Main does not follow mT-scaling of 
pion’s”

Best regards,
Nu


> On May 26, 2024, at 7:15 PM, 樊碧君 <bjfan AT mails.ccnu.edu.cn> wrote:
> 
> Dear Nu and all,
> 
> Thank you for your comment. I Have remove the pion mT dependence of lambda 
> parameter in slide 12, and the new version can be found in the following 
> link: https://drupal.star.bnl.gov/STAR/system/files/SQM_Kaon_HBT_v4_0.pdf
> 
> Thanks and regards,
> Bijun
>   ------------------ Original ------------------
> From:  "Nu Xu"<nxu AT lbl.gov>;
> Date:  Sun, May 26, 2024 11:39 AM
> To:  "綦猷全"<qyq AT mails.ccnu.edu.cn>; 
> Cc:  "nxu"<nxu AT lbl.gov>; "star-cf-l"<star-cf-l AT lists.bnl.gov>; 
> "樊碧君"<bjfan AT mails.ccnu.edu.cn>; "webmaster"<webmaster AT star.bnl.gov>; 
> Subject:  Re: [Star-cf-l] STAR presentation by Bijun Fan for SQM-2024 
> submitted for review
>  Dear Bijun, Youquan and All,
> 
> Due to combined effects of (i) momentum resolution coupled with centrality; 
> (ii) resonance decay contributions; (iii) multi-particle coherent effects, 
> and all of these effects become stronger at the low pt region. So one would 
> expect the lambda parameters become larger at higher pt region. This is 
> what we know in literatures. 
> 
> Before we understand the mt dependence, I again suggest we remove the pion 
> lambda mt dependence plot in this presentation.
> 
> For Youquan, do we have the corresponding analysis from the UrQMD 
> simulations?
> I mean the mt dependence of pion mt dependence from 1D and 3D analysis.
> 
> Many thanks,
> 
> Nu
> 
> > On May 25, 2024, at 11:04 AM, 綦猷全 <qyq AT mails.ccnu.edu.cn> wrote:
> > 
> > Dear Nu and Bijun,
> > 
> > Please find the results in the attachment.
> > 
> > Thanks Best Regards,
> > Youquan
> >  ------------------ Original ------------------
> > From:  "STAR Correlations andFluctuation"<star-cf-l AT lists.bnl.gov>;
> > Date:  Sat, May 25, 2024 08:46 AM
> > To:  "樊碧君"<bjfan AT mails.ccnu.edu.cn>; 
> > Cc:  "nxu"<nxu AT lbl.gov>; "STAR Correlations 
> > andFluctuation"<star-cf-l AT lists.bnl.gov>; 
> > "webmaster"<webmaster AT star.bnl.gov>; 
> > Subject:  Re: [Star-cf-l] STAR presentation by Bijun Fan for SQM-2024 
> > submitted for review
> >  Dear Bijun,
> > 
> > I do not understand this result.
> > I would ask YouQuan send us of results on 3D and 1D analysis regarding 
> > the lambda parameters.
> > In the mean time, I suggest remove lambda parameters from the figure on 
> > slide 12.
> > 
> > Best regards,
> > 
> > Nu
> > 
> > > On May 25, 2024, at 3:49 AM, 樊碧君 <bjfan AT mails.ccnu.edu.cn> wrote:
> > > 
> > > Dear Nu,
> > > Thank you for your comments and suggestions. Regarding the second 
> > > point, I have cross-checked with YouQuan's 1D results and observed that 
> > > the lambda value does increases with lower kT, which is contrary to the 
> > > findings of the 3D analysis in the same energy range. The published 
> > > results from HADES also exhibit a similar trend (refer to the figure 
> > > below).
> > > I have incorporated the other suggestions you provided, and the updated 
> > > version can be accessed through the following link:
> > > https://drupal.star.bnl.gov/STAR/presentations/SQM-2024/Measurements-Kaon-Femtoscopy-AuAu-Collisions-sNN-30-45-GeV-STAR-Experiment
> > > Thanks and regards,
> > > Bijun
> > > 
> > > <2D04F70E AT 0B0A9363.1EC2516600000000.png>
> > > 
> > >  ------------------ Original ------------------
> > > From:  "Nu Xu"<nxu AT lbl.gov>;
> > > Date:  Fri, May 24, 2024 11:55 PM
> > > To:  "star-cf-l"<star-cf-l AT lists.bnl.gov>; 
> > > Cc:  "nxu"<nxu AT lbl.gov>; "樊碧君"<bjfan AT mails.ccnu.edu.cn>; 
> > > "webmaster"<webmaster AT star.bnl.gov>; 
> > > Subject:  Re: [Star-cf-l] STAR presentation by Bijun Fan for SQM-2024 
> > > submitted for review
> > >  Dear Bijun,
> > > 
> > > I can download the file, thank you. Here are some comments/suggestions:
> > > 1) slide 5 - left figure: iTPC label at a wrong place;
> > > 2) slide 12 - pion lambda: Is it true that at lower kT, the values of 
> > > lambda are larger? I thought it is opposite. Please double check?
> > > 3) slide 15 - 2nd bullet: ==> “Within uncertainties, extracted 
> > > parameters from charged Kaon correlation data are consistent with that 
> > > from neutral Kaons”;
> > > 
> > > Thank you,
> > > 
> > > Nu
> > >