STAR HardProbes PWG

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

Hello Tristan,

As we don't have sufficient time for checks and discussion on your new 
jet v2 result which is an interesting result from STAR, I suggest please 
work on your systematic uncertainties which have significant 
contributions. And please crosscheck from your end these results.
I understand that some of our yesterday's suggested todo list needs some 
time to work.

Please send your preliminary draft of your HQ2022 presentation soon.

Besides, I have the following questions and suggestions on your 
preliminary request slides.

Slide11:
_For hard core jets, do you perform jet-by-jet rho times jet area 
subtraction?
_For hard core jet selection, have you checked with pT>1.5 GeV/c and 2.5 
GeV/c? Do you have such plots for comparison like your right side plot? 

Slide16:
_Do you understand why your last bin is going down to negative for 
hardcore only jet?
I would expect at high pT all these jets give the same v2 (or matched 
jet and hardcore jets would be the same). 
Is this just statistical fluctuations? 

_Can you please show Delta phi distributions (like slide#13) of that pT 
bin (where v2 is negative) for all three types of jets? 

Slide#17:
_ I like this plot to be "STAR Preliminary" with 5-40GeV/c pT range 
instead of your slide14; but you can keep this slide#14's plot as a 
backup. 
_ I would suggest the following cosmetic changes. 
1. Make STAR data points anything filled with red markers. 
2. Make ALICE markers with a lighter tone of green/gray color(make it a 
bit transparent or all color gray such that it would not dominate over 
StAR data point by look). In this current format, ALICE data points are 
dominating to the eye. 


Thank you
Nihar



On 2022-10-05 11:20, Tristan Protzman wrote:
> Hi All,
>
> Thank you for the comments on my preliminary figure request.  I have
> made the requested changes to the plotting, reflected here:
> Preliminary Figure Request: Azimuthal Anisotropy of Jets in √(s_NN
> )=200 GeV Ru+Ru and Zr+Zr Collisions (bnl.gov) [2]
>
> To evaluate the magnitude of systematic errors, I plan to look at the
> following:
> * Tracking efficiency - how does my result change if I throw out 4% of
> tracks?  This will take a few days as I need to run over the data
> again
> * Effects of modulated background - How does the result change if I
> change or even remove the background modulation from the assumed 4%.
> This should be faster, I should be able to report on this tomorrow.
>
> I have also included the measured jet v2 for the population of all
> jets, hard cores only, and matched jets in a backup slide.  In general
> there is good agreement between the three.
>
> Cheers,
> Tristan
>
> On Tue, Oct 4, 2022 at 9:57 AM Tristan Protzman <tlp220 AT lehigh.edu>
> wrote:
>
> > Hi All,
> >
> > Here are my slides for my preliminary figure request.
> https://drupal.star.bnl.gov/STAR/system/files/userfiles/6581/Protzman_JetV2_%20Preliminary_Figure_Request.pdf
> > See you all shortly,
> >
> > Tristan
> >
> > On Sun, Oct 2, 2022 at 10:34 AM Nihar Sahoo via Star-hp-l
> > <star-hp-l AT lists.bnl.gov> wrote:
> >
> > > Hello HP folks,
> > >
> > > We will have a separate HP-pwg meeting this week on our reserved
> > > day
> > > (Tuesday) 4th Oct at 10 AM BNL time.
> > > Tristan Protzman requested to meet before Thursday (our usual PWG
> > > meeting time) because he wants to update his jet v2 results for
> > > HQ2022
> > > STAR preliminary. Hence due to his time constraint and to make
> > > Tristan
> > > happy, We plan to meet this Tuesday also this week.
> > > If anybody wants to discuss anything (which must be urgent) then
> > > we can
> > > allocate this Tuesday too; otherwise, we can meet Thursday (with a
> > >
> > > separate meeting announcement).
> > >
> > > HP-pwg weekly meeting Drupal page:
> https://drupal.star.bnl.gov/STAR/pwg/Hard-Probes/Weekly-HP-PWG-meeting
> > > Zoom Meeting link:
> https://bnl.zoomgov.com/j/1611419615?pwd=VW1hNm43ZDd5d2EvK2R4aEJsQ2ZNZz09
> > > [1]
> > >
> > > Meeting ID: 161 141 9615
> > > Passcode: 744968
> > >
> > > Thank you
> > > Barbara, Yi, Sooraj, 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!AulmhgAy5Xz0XqpGUuYK1djv2jG5SWTEB1IumpHdbTS752yQ4P2x9cKCX0-KM_UEwy9EJvWg-mh1SK42YJCZYcs$
> [2] 
> https://drupal.star.bnl.gov/STAR/system/files/Protzman_JetV2_%20Preliminary_Figure_Request_v2.pdf