STAR HardProbes PWG

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

Hi Gaohan,

nice talk. Regarding the preliminary plot, please see my separate email from last week.

General suggestion for your consideration: you don't necessarily need to divide your presentation into Au+Au and isobar -> you can show the published results in Au+Au, then isobar and isobar compared to Au+Au, and then model and LHC comparisons at the end.

- s3: initial hard scattering -> initial hard scatterings 

- s3: I'm not sure about the message you want to give in the boxes. 

Bottomonia are also affected by the hot medium effects -> the suppression of the different Upsilon states is a better classic "QGP thermometer" than charmonia. 

The advantage at RHIC is also that there is basically no regeneration. 

Please modify the boxes. 

- s5: since isobar results are new, I suggest having here one plot for Au+Au and one for isobars. 

Template of each Υ stats -> Template of each Υ state; 

Residual background (dotted line) - Correlated bbar + Drell-Yan background (dotted line) - Pythia 6

- s6: the Au+Au paper is published: Phys. Rev. Lett. 130 (2023) 112301

Suppression gradual decrease -> Suppression gradually increase

- s7: The Υ(2S) less suppressed at -> Hint of less suppression of Υ(2S)

- s8: within the uncertainties -> within the uncertainties, except the Heidelberg Model that overshoots the data. 

Coupled Boltzmann equations contains CNM effects as well.

- s9: Compare to AuAu -> Compare to Au+Au

Why in the table do you specifically show 30-60% for Au+Au and 0-80% for Ru+Ru and Zr+Zr ?

I would rather show for which centrality bins that you have the <N_coll> are similar between the systems.

- s10: "The results are consistent ... " -  we don't have enough precision here, I would rather say "Hint of sequential suppression pattern"

Suppression gradual decrease -> Suppression gradually increase

And is it possible to estimate the Upsilon(3S) upper limit for isobars ? 

I would also make a transition slide where you compare the Au+Au results. 

- s11: Would be nice to add the Au+Au results here and write that for both there is no pT dependence observed. 

- s12: The Υ measurement in isobar collisions complements to those in the 30-60%Au+Aucollisions -> No significant species dependence at the same <N_part>, suppression driven by system size (<N_part>)

Transport model and OQS+pNRQCD model calculations are consistent with -> Different model calculations consistent with (Coupled Boltzmann eq is also consistent)

Cheers,

Barbara

On Thu, Apr 13, 2023 at 11:52 AM webmaster--- via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Dear Star-hp-l AT lists.bnl.gov members,

Gaohan Yang (gaohan_yang AT m.scnu.edu.cn) has submitted a material for a 
review, please have a look:
https://drupal.star.bnl.gov/STAR/node/63345

Deadline: 2023-04-24
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