STAR HardProbes PWG

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

Hi Yuan, 

nice abstract, please find below my comments.

- Heavy flavor quarks have a high probability of experiencing a relatively complete evolution process of QCD materials, so heavy flavor quarks are ideal probes  to study Quark-Gluon Plasma (QGP) properties in heavy-ion collisions. -> Heavy-flavor quarks are dominantly produced in the initial hard scatterings and participate in the whole evaluation of the QCD medium created in relativistic heavy-ion collisions. Therefore they are ideal probes to study the Quark-Gluon Plasma (QGP) properties. 

- "In particular, the study of heavy flavor quark energy loss ..." - I'm not sure if I understand this sentence.

Maybe:

In particular, the study of heavy flavor quark energy loss is an independent way to extract the properties of QGP bulk medium, which is generated by the hard scattering process with large energy and momentum deposition during several fm/c. The D0 -meson nuclear modification factor (RAA) and yield can also be used to study the dependence of the colliding system compared to the results in Au+Au collisions. -> Energy loss of heavy quarks in the medium can be studied using the D0-meson nuclear modification factor (R_AA). Furthermore, measurements of D0 R_AA in different colliding systems can shed light on potential system size dependence of the energy loss. 

D0 pT differential invariant yield -> D0 pT differential invariant yields and R_AA

"The number of binary collisions scale effect between isobar and Au + Au collisions is observed. The strong suppression D0 nuclear modification factor RAA is also observed for pT > 3 GeV/c in the central isobar collisions, demonstrating that charm quarks suffer significant energy loss in the bulk QCD medium. And model calculations reproduce the feature of RAA measured at 200 GeV."

I wouldn't say in the abstract what we observe from the new measurements - rather what we want to show:

The new results in isobar collisions will be compared to the previous Au+Au measurement at the same energy and to different theoretical model predictions. 

Cheers,

Barbara

On Thu, Apr 20, 2023 at 9:33 AM Nihar Sahoo via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Hello Yuan,

Please find my comments on your nice abstract.

_ Title: with the STAR experiment -> at STAR
_"Heavy flavor quarks have a high probability of experiencing a
relatively complete evolution process of QCD materials," -> Not sure
why? Do you mean it is because they are produced at the very stage of
the collisions?
QCD materials?
_ "an independent way to extract" not sure what is independent way?
_ the first measurements -> the measurements
_ D^0 pT -> The D^0 pT …
_ 0-10%, 10-40% and 40-80% -> 0-10%, 10-40%, and 40-80%
_ collisions, demonstrating that charm -> collisions that demonstrates
the charm…
_"And model calculations reproduce the feature of RAA measured at 200
GeV." -> Finally, the model calculations are compared to the data and
implications are discussed.


Cheers
Nihar







On 2023-04-18 09:43, webmaster--- via Star-hp-l wrote:
> Dear Star-hp-l AT lists.bnl.gov members,
>
> Yuan Su (suyuann AT mail.ustc.edu.cn) has submitted a material for a
> review,
> please have a look:
> https://drupal.star.bnl.gov/STAR/node/63440
>
> Deadline: 2023-05-01
> ---
> If you have any problems with the review process, please contact
> webmaster AT www.star.bnl.gov
> _______________________________________________
> Star-hp-l mailing list
> Star-hp-l AT lists.bnl.gov
> https://lists.bnl.gov/mailman/listinfo/star-hp-l
_______________________________________________
Star-hp-l mailing list
Star-hp-l AT lists.bnl.gov
https://lists.bnl.gov/mailman/listinfo/star-hp-l