STAR HardProbes PWG

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

Hello Gabe,

Thank you for having this interesting result on PID in jet.
We know this measurement is challenging. Great to see these results at 
this stage.

General comment:
All d_phi plots, please include "Uncorrected" in side the plot.


Slide-1

"We use jet-track correlations to separate Jets from UE and measure p/𝛑 
in jets "
-> "We measure p/pi yield ratio in jet using jet-track correlations"
You don't need to introduce _underlaying event_ from your 1st slide.
It depends on your taste.

Bottom correlation plot: I think you don't need to have this plot. Not 
relevant to your analysis and physics.
But still if you want to keep it, please use better resolution.

Slide-2
"Introduction" -> Better to use " Jet-track correlation measurement 
technique"
"𝑠 = 200 GeV p+p collisions, 2015" -> "$p$+$p$  \sqrt {s} = 200 GeV 
(2015)"
"𝑠!! = 200 GeV 20% most central Au+Au collisions, 2014" -> 0-20% central 
Au+Au  \sqrt {s_{\rm NN}} = 200 GeV (2014)"
"Jets" - > "Jet reconstruction:"
"various R " -> "various jet resolution parameter, R = 0.3, 0.4,0.5" 
(make separate bullet)
"Fully reconstructed jets…" -> "Reconstructed jets with…"
"PID in jets" -> "particle indentification in jets"

Slide-3
"Low, 2.0 < 𝒑𝑻 < 3.5" -> "Low p_{\rm T}: 2.0 < p_{\rm T} < 3.5 GeV/c"
"Bin count protons and Fit for pions and kaons" (you don't need to 
mention here)
Rather please add purity of the sample plot.

"High,  𝒑𝑻 > 3.5" -> "High p_{\rm T}:  p_{\rm T} > 3.5 GeV/c"
Please drop also these two bullet and add purity plot within these pt 
ranges. That is more informative.

Slide4:
_ 1/N_jet d^2N/d_eta d_phi -> 1/N_jet d^2 N_trk / d_eta  d_phi  (same 
for other plots)
_ put unit of pT range in the plot
_ Between "Raw correlation"  and  "Mixed Event", does that "/"  
represent "division" or "subtraction"? Please mention it.
"1]"-> remove it

Slide-5:
I think it is important to mention Y-aixs title of middle panel d_phi 
correlation plot to indicate how do you normalize UE and Jet-like 
correlation distributions. Or add some bullet.

SLide-6:
_Still your plots' outside legend not clearly visible. Increase the font 
size.
_Here it is important to mention what is the dphi range you have used to 
select these track yields? Like d_R in jet-like correlations.
_You need to mention here what is "Track-Track correlation"? Like how do 
you correlate  two tracks; what is leading and associate track pT 
selection?

Slide-7:
_Along with "Strong preference for 𝛑 over p"
_please also add another bullet that "jet-track and track-track 
correlations give the same results"
_Include "uncorrected" inside the d_phi correlation plot

Left fig. In slide7,8,9: Please change filled box color or use unfilled 
color box (with only box daubery color).
In the current format, makers are invisible.

Same comment for figure in Slide10,11,12,13,14: (This is your key plot, 
so try to improve the marker and box)

Slide-10:
"Strong preference for 𝛑 over p in hard constituent jets" Bring this to 
a visible position; a little up.
No one can see at this position. This is your key message.

Same for "Changing p/𝛑 ratio". In slide#12,13, 14
ANd "Changing p/𝛑 ratio" -> " p/𝛑 ratio enhancement with increase in jet 
R"

Slide-12,13,14: Mention inside dphi figure "Uncorrected"
"Strong enhancement of intermediate 𝑝T associated yield" -> "d_phi 
correlation distributions changes in central Au+Au relative to p+p with 
increase in track pT" (something like that)
As this is an uncorrected results, I would soften the statement.


Slide-14:
"Broader distributions for larger jet R " -> "Noticeable change in shape 
with increase in R"
We don't want to say something on these uncorrected distributions 
strongly.


Slide-15:
Define "dR" here.

You need to explain a bit more, People may not get what you have done 
here.
I would suggest take one example like
Use jet with R=0.3 and show deta-dphi correlation plot with different dR 
circles in it as you have done for left figure.
Then say same for other cases. It will be easily conceivable.
And then indicate the right side plot.

Slide-16:
_ "Are we looking at jet substructure modification? " Not sure why do we 
need this statement?
_ "additional jet-like objects reconstructed with softer constituents " 
-> I would just say "Possible combintorial jet contribution"

Slide17:
I have a concern on your left most plot.
I know I have seen it before, now after going through all our results.
I think your "magenta circle" which is an embedding pp jet into AuAu may 
not be correct or we are missing something there. Naively, your "magnets 
circle" and "red box" should behave the same way.

I would suggest not to show this slide in your presentation. We have 
enough material to discuss and bring attention.
We can discuss on this embedding part in details again after HP23 
conference (sorry to say that).


Slide18:
"Hard-core Jets in Au+Au" -> "Hard-core Jets with constituent pT> 3 
GeV/c in Au+Au " (I know we put in the figure but we need to mention in 
text as well)
Make it please specific. Because this is the key point.

Cheers
Nihar











On 2023-03-22 02:36, Gabe Dale-Gau via Star-hp-l wrote:
> Conveners,
>
> Thank you for all of your comments and input.
> I have updated my Star-Talks submission here:
> https://drupal.star.bnl.gov/STAR/presentations/Hard-Probes-2023/Baryon-Meson-Ratios-AuAu-and-pp-collisions-sqrtsNN-200-GeV
>
> I have implemented many changes in this version to address all of the
> comments I received from Nihar and Barbara, as well as general
> rephrasing throughout to simplify text on slides.
>
> Rongrong, the first three slides in the backup section are included to
> address your question about the origin of two strange points in the
> Au+Au correlated jet peak signal.
>
> I will create a separate drupal page with figures included as
> individual files shortly.
>
> Let me know if you have further questions or comments.
>
> Many thanks,
>
> Gabe
>
> On Mon, Mar 20, 2023 at 3:59 PM Ma, Rongrong <marr AT bnl.gov> wrote:
>
> > Hello Gabe
> >
> > Thanks for sending out your slides.
> >
> > I would like to follow up on what I asked last Thursday. Have you
> > looked into the two data points around dPhi ~ 0 with large error
> > bars for R = 0.5 case on slide 14, middle figure? Furthermore, one
> > can see that the data point close to 0 jumps up quite a bit for pp
> > (blue circles). Is this understood? Maybe it is worth looking at the
> > distributions before ME correction and UE subtraction.
> >
> > Best
> > Rongrong
> >
> > > On Mar 14, 2023, at 10:28 PM, webmaster--- via Star-hp-l
> > <star-hp-l AT lists.bnl.gov> wrote:
> > > Dear Star-hp-l AT lists.bnl.gov members,
> > >
> > > Gabriel Dale-Gau (gdaleg2 AT uic.edu) has submitted a material for a
> > review,
> > > please have a look:
> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrupal.star.bnl.gov%2FSTAR%2Fnode%2F62971&data=05%7C01%7Cgdaleg2%40groute.uic.edu%7C9f6e731de6d14293220e08db2985febe%7Ce202cd477a564baa99e3e3b71a7c77dd%7C0%7C0%7C638149427703661534%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=lw4%2FS%2FVOKfsbMvIZKPS52HHMz5AIuwBxhzziswjVGrQ%3D&reserved=0
> > [1]
> > > Deadline: 2023-03-26
> > > ---
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