STAR HardProbes PWG

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

Hello Dandan,

Please find my comments on your nice presentation.

Slide6:
_ "colour-singlet vs colour-octet vs gluon fragmentation" -> Provide 
reference
_ 𝐃𝐢𝐫𝐞𝐜𝐭𝟔𝟎% + 𝒇𝒆𝒆𝒅 𝐝𝐨𝐰𝐧 -> "feed" make it roman
_ Non-prompt: b hadron decay -> Give an example
_…in 200 GeV pp collisions. -> … in pp collisions at \sqrt(s) = 200 GeV

Slide7:
_Left fig and texts on this slide are not making any context here. Could 
you please add some text on it?
_ In box "We estimate the expected 𝐽/𝜓 polarization at small 𝑝𝑇, and 
find that it translates into the asymmetry…" -> It doesn't mention at 
what collision energy? And also it is not clear what exactly you want to 
convey.

Slide9
_ Mention what is "PID (1/𝛽)" and "PID (𝐸 /p)"? Not clear

Slide11:
_Lower panel Y-axis title   "# of J/psi (cor)" -> Please mention it 
explicitly what you are plotting along X-axis

Slide12:
_What are I_q, I_f, and I_inv along Y-axis? Mention it as "λ" [Same for 
slide14[

Slide13:
_"New results is the most accurate and highest statistical measurement" 
-> Remove this.
_ Last bullet, "…consistent with pp results within uncertaintie" -> 
λ_theta and λ_phi in Isobar and pp collisions are consistent with zero 
within uncertainties

Slide18:
_"significance of 3.6 𝝈" -> you have not discussed this in your 
"preliminary request" , Please update it/
https://drupal.star.bnl.gov/STAR/system/files/Preliminary_figures_request_1.pdf
But Could you prove the numbers where do you get 3.6 sigma? Just to make 
sure.

Slide19:
"The 𝐽/𝜓 𝜌00 is measured to be less than 1/3 in isobar data at STAR" -> 
Remove this. Sounds strong statement.
Because at this level, we can just quote "significance of 3.6 sigma" as 
you mentioned in Slide18. I think That is sufficient.
We need to discuss a few things after the conference like background 
subtraction, Fitting parameter extraction, etc in details.

I would suggest remove Slide19. Not required.

Slide20:
_"…very different collision energies and different rapidity" -> add also 
different collision systems (Isobar vs PbPb)

Slide21:
_2nd subbullet "The 𝐽/𝜓 𝜌00 is measured to be less than 1/3 in isobar 
data at STAR" -> Remove it, You already mentioned it in 1st subbullet
_3rd sub-bullet: "…despite of very different collision energies and 
different rapidity" -> see comment on Slide20


Cheers
Nihar


On 2023-09-22 01:26, Dandan wrote:
> Hi Nihar, Yi and Isaac
>
> Here are my slides at the SPIN 2023 conference. This is a new version
> with an improvement.
> I would be grateful if you could address it. Because the meeting
> started on the 25th.
> Please find the new version in the link:
> https://drupal.star.bnl.gov/STAR/system/files/spin_Dandan_v0_QianYang_v2.pdf
>
> Thanks again!
>
> Best,
> Dandan
>
> From: webmaster--- via Star-hp-l <star-hp-l AT lists.bnl.gov>
> Date: 2023-09-19 21:45:17
> To:  Star-hp-l AT lists.bnl.gov
> Cc:  webmaster AT star.bnl.gov
> Subject: [Star-hp-l] STAR presentation by Dandan Shen for SPIN 2023
> submitted for review>Dear Star-hp-l AT lists.bnl.gov members,
> > Dandan Shen (shendandan AT mail.sdu.edu.cn) has submitted a material for
> a
> > review, please have a look:
> > https://drupal.star.bnl.gov/STAR/node/65180
> >
> > Deadline: 2023-09-24
> > ---
> > If you have any problems with the review process, please contact
> > webmaster AT www.star.bnl.gov
> > _______________________________________________
> > Star-hp-l mailing list
> > Star-hp-l AT lists.bnl.gov
> > https://lists.bnl.gov/mailman/listinfo/star-hp-l