STAR HardProbes PWG

[Barbara Trzeciak <barbara.trzeciak AT gmail.com>]

Hi Veronika,

nice and clear poster.

Please see my comments below. With these addressed I sign off.

Introduction:

- Yet ATLAS (right) and PHENIX observed significant jet modification -> Yet ATLAS and PHENIX observed significant jet modification in p+Au collisions

Jet mass

- Consistent with QCD predictions and STAR pp data - you don't have on the plot neither QCD predictions nor pp data, right ?

Since conclusions from the top and bottom plots are the same, I would suggest replacing one of them with a plot showing a comparison between the p+Au and pp results. 

And I guess the conclusion on the consistency with QCD predictions is based on the p+p paper ? If so, I would suggest moving the reference closer to the statement, now it looks that the plot is taken from this paper. 

Activity-dependent jet yields

- Right plot: the legends and labels are very small, please enlarge them. 

 = 200 GeV = 200 GeV -> = 200 GeV (the energy is doubled)

Cheers,

Barbara

On Thu, Jul 7, 2022 at 1:03 PM Nihar Sahoo via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Hello Veronica,

Please find my comment and suggestions on your nice poster.

Introduction:

_Yet ATLAS (right) and PHENIX ..   ->  ATLAS and PHENIX … (please
provide references to these results)
_"WHy ?" Remove it

_"p+A collisions thought too small for QGP formation "  Need to mention
what that is "small"? For example, system size, initial energy density,
etc

_"How does the hard scattering in an event affect event activity (EA)
and underlying event (UE) at mid-rapidity?" -> You need to mention what
is EA and UE.

_Just after the above statement.
This ATLAS plot does not fit to the physics message.

Experiment and Event Activity:

_Mention what is eta?
_"|η|<1, " - > "|η| < 1 " (similarly below) _ "Charged tracks …" and
"Neutral tower…" in box; please include in the TPC and BEMC bullets (no
need to have a separate box)
_"the inner BBC signal" -> what is that signal? ADC/hit/ etc.


Jets and UE measurement method:

_R=0.4 -> mention what is R?
_ Need to mention what are  phi_lead, phi_trig, phi_UE, eta_lead?
_what is p_{T,lead}^{reco}? Mention it.

Jet mass as a function of EA:

_Define and mention what is jet mass?
_Consistent with QCD predictions and STAR pp data  -> "Consistent with
QCD predictions" or "STAR p+Au data and QCD predictions are consistent"


Activity-dependent jet yields:

_"The distribution of EA_BBC is inversely correlated to leading jet pT"
and also its bullet -> Please rephrase this; not clear


Conclusion:
"Dependence of soft particle production on the initial hard scattering"
-> How do you draw this conclusion?
"Indicates EA vs. Q2 correlations from early time effects" -> Not sure,
How do you draw this conclusion?
"Jet quenching in p+Au collisions disfavored—no sign of final state hot
nuclear matter effects" Very strong statement. I would suggest to drop
this or mild this statement. Not sure how do you get this conclusion?


Cheers
Nihar

On 2022-07-07 15:30, webmaster--- via Star-hp-l wrote:
> Dear Star-hp-l AT lists.bnl.gov members,
>
> Veronica Verkest (vverkest AT gmail.com) has submitted a material for a
> review,
> please have a look:
> https://drupal.star.bnl.gov/STAR/node/60190
>
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