STAR HardProbes PWG

[Nihar Sahoo <nihar AT rcf.rhic.bnl.gov>]

Dear PAs,

I have gone through the AN and paper draft. I find both the materials in 
good shape, besides my following comments.
Please take a look at my comments below.
If Isaac and Qian will sign off with all these comments, then we can 
request for the GPC formation around 1st week of January.


Title: “First observation of charmonium sequential suppression in 
heavy-ion collisions at  Relativistic Heavy Ion Collider” -> “ 
Measurement of charmonium sequential suppression in heavy-ion collisions 
at  Relativistic Heavy Ion Collider”  [ “First …” in title sounds 
awkward and a reader can judge it. ]

Line7: "We report on measurements of charmonium …” -> “We report the 
measurement of charmonium …”

L48-51: “…has  been measured in Pb+Pb collisions at …” 
 Better to 
mention what we observed at the LHC experiments and what more 
information we can get at RHIC measurement and why it is important to 
measure at RHIC energy.

L90-92: This sentence sounds redundant and you already mentioned in 
intro. Please drop it.

L138: “… from data for different BDT cuts, “ it is not clear from the 
text what are BDT cuts. Please elaborate and avoid words like “cuts”. 
Use condition or criteria, etc. [Similarly for other places]

_ Many places “200 GeV” is used, use “ \sqrt s_NN = 200 GeV”

_ It would be important to point out that what is advantage of using 
BDT/ supervised ML technique over traditional invariant Mass 
combinatorial subtraction method. A account will enhance this paper. 
Please indicate if such comparisons are discussed in AN.

_ L280-289: “While all three measurements are consistent within 
uncertainties, the centrality dependence in 200 GeV Ru+Ru and Zr+Zr 
collisions seem to more closely resemble the measurements at 17.3 GeV…” 
This is not true within uncertainty . “…seem to more closely resemble….” 
Please paraphrase .

I think it would be better to make Fig,3 as final money plot for this 
paper. Whereas Fig.4 and it discussion should come before double ratio 
vs Npart plot.
I find Ratio vs pT plot is less significant, due to uncertainty, than 
current Fig.3 to convey the message.

Fig.3:
_ Please add in the legend what is that gray band on unity line. It is 
unclear.
_ Can we have p/d+Au 200 GeV CNM effect calculation from Tsinghua group? 
That would even strengthen the claim.

_ Is there any discussion or information on QGP Temperature from 
Tsinghua's group calculation?

Thank you
Nihar


On 2024-11-02 16:21, wy157543 wrote:
> Dear HPs,
>
> The paper draft and analysis note for “First observation of
> charmonium sequential suppression in heavy-ion collisions at
>
> Relativistic Heavy Ion Collider” are ready for pwg review. The
> associated documents can be found as follows:
>
> Webpage:
> https://drupal.star.bnl.gov/STAR/blog/wy157543/Measurement-psi2S-production-RuRu-and-ZrZr-collisions-200-GeV-0
>
> Paper
> draft:https://drupal.star.bnl.gov/STAR/system/files/psi2s_paper_pwg.pdf
>
> Analysis note:
> https://drupal.star.bnl.gov/STAR/system/files/psi2s_note_pwg.pdf
>
> We would appreciate it if you could review the documents and provide
> us with your valuable comments and suggestions!
>
> Best regards,
> Yan for PAs