STAR Correlations and Fluctuations PWG

[Xiaofeng Luo <xfluo.star AT hotmail.com>]

    Hi Mike,
      
          Thank you for sharing the changes in the paper and the efforts
      to publish this important paper. 
          I agree that this is an interesting plot, which could be
      potentially related to the 
          QCD phase transition. 
      
          I have few suggestions/questions, please those below : 
      
          1）In line 852, when describing the trend,  the reference 31,
      80 and 81 are cited. 
               The 31 is for BES-I directed flow, 80 is for BES-I CME
      related charge separation. 
               81 is for BES-I net-charge fluctuations. 
               I would suggest to also cite  
               net-proton fluctuations from BES-I which show interesting
      energy dependence structures related to Fig.20. 
               : PRL 112,032302 (2014) and recently submitted : arXiv :
      2001. 02852
      
          2) I found the the systematic errors in 200 GeV are large in
      the plot: 
    https://drupal.star.bnl.gov/STAR/files/starpublications/214/Fig07.png
        
        But this didn't reflect in the Fig. 20. Am I missing something ?
        
        In Fig. 20, only statistical errors are shown ?
        
        
      Thank you, 
      Best Regards,
      Xiaofeng

On 2020/11/21 10:37, Lisa, Michael via Star-cf-l wrote:

Hello CF groupies,

 

As you know, STAR has a paper on flow and HBT in Au+Au at 4.5 GeV, fixed-target configuration, which has submitted to Phys. Rev. C.  You have seen on the starpapers list the referee report, which is relatively straightforward to respond to.  As the PAs put together our response, we decided to add another figure, to emphasize the importance of pion HBT radii at this crucial energy.

 

Even though there is no data on this plot that isn’t in the other figures in the paper, I thought you would like to see it, as it gives a clear picture of the famous “R_out over R_side” issue.  Please look at figure 20 in this pdf file:

https://www.star.bnl.gov/protected/bulkcorr/ywu27/fxtPaperWeb/Fixed-Target_Paper_Proposal_files/GPC273_Draft_2point4point1_FXT.pdf

It is discussed in Section VI.B.3

 

It’s really nice to have this new low energy point, together with the HADES point from GSI.  However, note that we have already published this graph (minus those two points) in our long BES paper, Phys. Rev. C 92 (2015) 14904.  You can see the figure (figure 7) here:

https://drupal.star.bnl.gov/STAR/files/starpublications/214/Fig07.png

 

Best regards,

Mike

 

 

 

 

-- 

Michael Lisa

Professor of Physics

The Ohio State University

 

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