STAR HardProbes PWG

[Sijie Zhang <sijiezhang AT mail.sdu.edu.cn>]

Hi Isaac,

I have implemented the abstract. You can find the updated version here:

https://drupal.star.bnl.gov/STAR/system/files/APS_abstract_v4.pdf

Thanks,

Sijie

2024年10月18日 02:49，Mooney, Isaac <isaac.mooney AT yale.edu> 写道：

Hi Sijie,

Thanks for considering my comments. Please see one more comment, below. With this implemented, I sign off.

-Isaac

10. “it is absent in smaller p+A collisions, either because the medium is not formed, or its temperature or lifetime is too low to cause jets to lose much energy"

On Oct 17, 2024, at 13:31, SijieZhang <sijiezhang AT mail.sdu.edu.cn> wrote:

Hi Isaac,

Thank you for your suggestion! I agree that jet+h is interesting and could provide valuable insights. If the opportunity arises, I’ll consider exploring it further.

I have uploaded a new version, which can be found here:

https://drupal.star.bnl.gov/STAR/system/files/APS_abstract_v3.pdf

Thanks,

Sijie

From: "Mooney, Isaac" <isaac.mooney AT yale.edu>
 Date: 2024-10-17 04:26:10
To:"star-hp-l AT lists.bnl.gov" <star-hp-l AT lists.bnl.gov>
Subject: Re: [[Star-hp-l] ] STAR presentation by Sijie Zhang for APS Spring 2025 Global Physi... submitted for review>Hi Sijie,
>
>I’m happy to see the OO data being used, as there was considerable interest at Hard Probes this year. In particular, I talked to Aleksas, who was presenting this work: https://indico.cern.ch/event/1339555/contributions/6040954/ (shame the pdf isn’t posted). He was arguing actually that jet+h would be even more interesting than h+jet results in OO. Although this question isn’t necessarily related to the abstract, have you thought about looking into this as well, e.g. for Quark Matter? 
>
>As for comments on your nice abstract, please see below.
>
>Title: “...jet yield measurements in…"
>
>10. Here I would talk a bit more about the effect that decreasing system size is expected to have on the medium (e.g. smaller, colder, etc.) so it’s clear to a reader that it wasn’t an experimental surprise that we don’t see anything in small systems (in the hard sector).
>
>12. 
>	“provide”
>	“pinpoint the critical system size for the onset of jet quenching” should be reworded. A given system (OO) cannot pinpoint the onset of jet quenching — it would require at least two. Also, the word “critical" is a bit misleading here, as it might evoke critical behavior of the medium in the reader’s mind, whereas the absence of jet quenching in a system can tell us at most that the medium is small/cold/fleeting enough not to modify jets within precision, or that the effect it has is small compared to cold nuclear matter effects, which is a different question than existence/non-existence. I would suggest simply: “...200 GeV bridge the gap between these small and large systems.” since your previous and last sentence already make your case anyway.
>
>14. “first measurement of jet quenching” is skipping a step. Semi-inclusive / inclusive jet yields and their ratio is the measurement; jet quenching is the (possible) physical cause of the (potential) yield modifications.
>
>18. I understand why you wrote this, but I would remove the last clause “and are complementary…”. Of course it will be great to see OO results at LHC energies as well, and compare to the extent possible. However, I think your abstract should highlight that these data are unique in the world for the near future, and yours would be the first measurement of its kind to be done in OO anywhere. When the LHC has taken OO data in 2025, they can write in their abstracts that they are complementary to existing measurements at RHIC.
>
>General: "semi-inclusive hadron+jet" and “event mixing technique” are fairly compact jargon. If you have space, I would recommend unspooling these a bit, e.g. “jets recoiling from high-momentum hadron triggers” for the first one.
>
>Thanks,
>Isaac
>
>On Oct 13, 2024, at 11:15, webmaster AT star.bnl.gov wrote:
>
>Dear Star-hp-l AT lists.bnl.gov members,
>
>Sijie Zhang (sijiezhang AT mail.sdu.edu.cn) has submitted a material for a  
>review, please have a look:
>https://drupal.star.bnl.gov/STAR/node/69372
>
>Deadline: 2025-03-16
>---
>If you have any problems with the review process, please contact  
>webmaster AT www.star.bnl.gov
>