STAR HardProbes PWG

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

Hello Tanmay,

Please find my comments on your preliminary request.


General comments:

Can you please add three plots showing systematic variations from 
different sources for pTD, LeSub, and g for 20-60 GeV/c cases? In 
support of your table on slide#9.

Can you please follow the guidance 1 to 7 from this link for your all 
preliminary plots?
https://drupal.star.bnl.gov/STAR/pwg/common/Preliminary-figures

Particularly, X-,Y- axies title, label, and tick mark need some work on 
increasing size.
And Legend should overlap with the data for example "(year 2012)" on g 
plot.

Can you please add the expression of pTD, LeSub, and g in one of your 
slides?


SLide:10
1) "This hints towards need to tune PDFs in PYTHIA to produce more quark 
jets "

I think we can't tune PYTHIA to produce more quark jet. What we can tune 
is the PDF/FF/UE threshold, etc?
Have you checked the q/(g+q) fraction in this sample from these two 
PYTHIA versions in this kinematic range at RHIC? And how much individual 
q and g jet contribute to these observables?
this is probably needed for your HP presentation to make a physics 
motivation also.

2) "Data closer to PYTHIA8 at higher girths (less collimation) and 
closer to PYTHIA6 at lower girths (more collimation)"
Both quantitatively and qualitatively, it is not correct. Is not that?
Except at the peak of the g-distribution.

3) Remember, we have published our jet substructure observables with 
SoftDrop grooming that all PYTHIA versions are in agreement with the 
data in some extent.
Probably, that we can make a case here that in these observables we 
don't remove Soft-collinear contributions.
So these soft-collinear contribution is sensitive to these observables 
while comparing to the models.
(You can think on it, and please comment what do you think?)


SLide-11:
Again, you can make a case here that "Soft-collinear contribution are 
not sensitive to LeSub observable as we don't see any difference between 
data and PYTHIA versions"
(Let's discuss on this point)

SLide-12
This plot needs some work, it is very noisy. Can you please work on 
guidance:1 to 7 from the above link?


Cheers
Nihar




On 2023-03-12 00:55, Tanmay Pani wrote:
> Dear Convenors and all,
>
> I sincerely apologize for the delay but here are our preliminary
> requests for the HP2023.
>
> STAR_Preliminay_Request_HP2023.pdf [2]
>
> Thanks,
>
> Tanmay
>
> On Mon, Mar 6, 2023 at 2:23 AM Nihar Sahoo via Star-hp-l
> <star-hp-l AT lists.bnl.gov> wrote:
>
> > Hello HP aficionados,
> >
> > We will have our HP-pwg meeting this Thursday (9th Mar) at 10 AM
> > EDT.
> > Let us know please if you want to present and discuss your analysis
> > or
> > any other business.
> > We request you all to send their presentation link 1-2 hrs before
> > the
> > meeting.
> >
> > Deadline for HP2023:
> > 1. Feb. 27th - Mar. 10th 2023: PAs should make an official request
> > to
> > the PWG.
> > 2. All presentations/posters should be posted on Drupal by Mar.
> > 13th,
> > 2023 for approval
> >
> > Also Please update retrospectively the link of your previous
> > presentation on the drupal HP-pwg page (even for 2022).
> >
> > HP working group weekly meeting info:
> https://drupal.star.bnl.gov/STAR/pwg/Hard-Probes/Weekly-HP-PWG-meeting
> > Join ZoomGov Meeting
> https://bnl.zoomgov.com/j/1611419615?pwd=VW1hNm43ZDd5d2EvK2R4aEJsQ2ZNZz09
> > [1]
> >
> > Meeting ID: 161 141 9615
> > Passcode: 744968
> >
> > Regards,
> > Barbara, Yi and Nihar
> > _______________________________________________
> > Star-hp-l mailing list
> > Star-hp-l AT lists.bnl.gov
> > https://lists.bnl.gov/mailman/listinfo/star-hp-l
>
>
> Links:
> ------
> [1] 
> https://urldefense.com/v3/__https://bnl.zoomgov.com/j/1611419615?pwd=VW1hNm43ZDd5d2EvK2R4aEJsQ2ZNZz09__;!!P4SdNyxKAPE!A-a-gCShTIOdJdOHbQl_dFCMGalX0hZ74r0vK_5g0ePQnQhvo48UM3ukfRJ_X8wdk-raI8dVPtigjIX62sLe2VuShYac4kw$
> [2] https://drupal.star.bnl.gov/STAR/system/files/document_4.pdf