STAR HardProbes PWG

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

Hello Youqi,

Please find my comments on your nice DIS slides and additional 
suggestions on preliminary plots.
_____________________
General comment/suggestion to all HP2023 and DIS2023 presenters:
1. Please make a Drupal page for all your preliminary plots and provide 
us the link.
If you have already done that, please send us the link.

2. While preparing your analysis plots for "STAR preliminary" request, 
please follow the guidance 1-7: 
https://drupal.star.bnl.gov/STAR/pwg/common/Preliminary-figures
It saves our time.
_________


Slide-2:

"low pT" -> "low transverse momentum (p_{T})"

Slide-3:
_Need to introduce what is "SD selections"

_ "Remove underlying event and pileup, not necessary for 200 GeV 
collisions" -> "Remove underlying event and pileup"
Do you want to say at 200 GeV there is no underlying event and pileup?
 You can drop this statement. Not required.

_Not clear what is the purpose of showing STAR <pTch> vs jet pT plot? 
Either you out some comment on it or remove this.
 Probably you want to say about UE measurement in STAR. Make it clear.

_While introducing these observables, I think you need to introduce in 
separate slide or in big size.
  In this way, audience can't see at the bottom.
_You need to introduce what is M, Mg, etc. (you may need to combine this 
with Slide7 )

SLide-6:
"applied in RHIC data" -> "applied on RHIC data"

Slide-7:
Mention what are pT1,2? (Try to connect or combine Slide3)

SLide-8:
Gev->GeV/c
If you want to mention such details, then need to mention what is 
"neutral pT fraction…"?

Slide12:
"	•	45% of jets within in this pT range " -> "	45% of jets within in 20 
< p_{T,jet} < 30 GeV/c"

In this plot,
1) it is not clear what is "N" in Y-axis? (Same for other plots)
2. You missed star marker as "data" in the legend.
3. 20<pT<30 GeV/c -> 20 < p_{#rm T,jet} < 30 GeV/c (same for other 
plots)
4. Either inside the plot or outside, you need to mention what "red band 
" is?


Slide14:
1. "A small groomed jet radius can be a result of any amount of 
grooming; a large groomed jet radius only leave spaces for little or no 
grooming" ->
Smaller and larger groomed jet radius appear with wide and narrow range 
of SoftDrop grooming mass, respectively.


Left slide plot:
1. Please follow Guidance 5 and 2. 
https://drupal.star.bnl.gov/STAR/pwg/common/Preliminary-figures
2. Make all your legend visible clearly

Right side plot:
        1.      Put "STAR preliminary"


Slide:15
1. Here  you need to mention the difference between "Mg" and "mu" 
(groomed mass fraction) for public.
Either you put both expressions and relationships between them.

2.Top-right cartoon, mu->0 and mu->1 size is small not visible. Please 
mention also what is the importance of different color inside the jet. 
That is important to printout for your fraction.

3. Please follow Guidance -2 in the above link for this plot (X,Y-axis 
title size).

  4. "μ has a weak dependence on Rg" -> μ has a weak dependence on Rg 
and all PYTHIA versions explain the data"

"See Monika Robotaková’s talk at Hard Probes for more details!" -> "See 
Monika Robotaková’s talk at Hard Probes-2023 for more details!"


Slide16:

Left plot:

1. What is "~DGLAP: pQCD" ? The dashed lines are HERWIG7. Is not that?
Not sure what you want to point out here?

2.	"The more mass that is groomed away relative to the original mass, 
the flatter the Zg distribution"
          Apparently this is not the case in left side plot. It shows 
the decreasing trend with increase in Zg although there is a relative 
difference.

3. "Demonstratesthatinitialsoftwideangleradiation constrains the 
momentum imbalance of & the amount of NP contributions to later 
splittings" Not sure how we draw this conclusion on NP.
4.	"The first splitting that passes SoftDrop can still be 
non-perturbative"
But from the STAR paper (right side plot), did not we draw a conclusion 
that 1st split is from perturbative contribution and follow the 
splitting kernel?


Slide-17:

"Can be compared with SCET calculation " we don't need to mention 
suddenly in your conclusion slide where you do not have any discussion 
before. That is a later part by theorist to do.

"Jets with a large perturbative contribution can be enhanced by 
selecting on small collinear drop mass"
Can you point to me from which plot you draw this conclusion?


Cheers
Nihar




On 2023-03-14 20:42, webmaster--- via Star-hp-l wrote:
> Dear Star-hp-l AT lists.bnl.gov members,
>
> Youqi Song (youqi.song AT yale.edu) has submitted a material for a review,
> please have a look:
> https://drupal.star.bnl.gov/STAR/node/62961
>
> Deadline: 2023-03-27
> ---
> If you have any problems with the review process, please contact
> webmaster AT www.star.bnl.gov
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