STAR Flow, Chirality and Vorticity PWG

[Zhiwan Xu <zhiwanxu AT physics.ucla.edu>]

Dear Conveners,
  Thank you for the sincere comments. I have implemented them and prepared a 
revised version.
  Please take a look at the new attached QM abstract: 
https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2023/Search-Chiral-Magnetic-and-Vortical-Effects-Using-Event-Shape-Select
  Let me know if you have any suggestions. 

Best,
Zhiwan

------------------------------------
Zhiwan Xu, 
Department of Physics and Astronomy, UCLA
zhiwanxu AT physics.ucla.edu

----- Original Message -----
From: "webmaster--- via Star-fcv-l" <star-fcv-l AT lists.bnl.gov>
To: star-fcv-l AT lists.bnl.gov
Sent: Monday, April 24, 2023 8:28:12 PM
Subject: [Star-fcv-l] STAR presentation by Zhiwan Xu for Quark Matter 2023    
  got commented by Prithwish Tribedy

Dear star-fcv-l AT lists.bnl.gov members,

Prithwish Tribedy ( ptribedy AT bnl.gov ) has commented on a material originally 
 
submitted by Zhiwan Xu ( zhiwanxu AT physics.ucla.edu ) at
https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2023/Search-Chiral-Magnetic-and-Vortical-Effects-Using-Event-Shape-Select

Comment:
Nice abstract! A few modifications for you to consider.

"Quark chirality effects in heavy-ion collisions probe the topological sector 
 
of Quantum Chromodynamics, where parity and charge-parity symmetries are  
violated locally in strong interactions.
-->
"In heavy-ion collisions, the chirality of quarks can change due to the local 
 
violation of parity and charge-parity symmetries in strong interactions. This 
 
provides a unique opportunity to probe the topological sector of Quantum  
Chromodynamics."


"However, experimental measurements of the chiral magnetic and vortical  
effects (CME/CVE) are hampered by the dominant elliptic flow and nonflow  
backgrounds."
-->
"However, the experimentally observable effects of this phenomena, such as  
the chiral magnetic/vortical effect (CME/CVE), are overwhelmed   by elliptic  
flow and nonflow backgrounds."

"Recent STAR isobar data revealed a substantial background in the CME  
observables that prevented an unambiguous observation on the difference of  
isobar."
-->
"Recent STAR measurements showed significant background contributions to the  
CME observables in isobar collisions, preventing an unambiguous observation  
of the signal difference between the two isobars."

After the line:
"We propose an improved....search of the CME and CVE."
move the line:
"The Au+Au system at lower beam energy....nonflow background could be largely 
 
suppressed."

Then move this line "After categorizing events..... correlations".
However, I suggest you revise the sentence as follows:

"After categorizing events based on flow strength and extrapolating the  
CME/CVE observable towards zero flow limit, we report the ∆γ measurements  
using h-h (excluding protons) and Λ-p correlations."
-->
"Our ESS approach categorizes events by their flow strength and extrapolates  
the CME/CVE observable to the zero-flow limit. We use this approach to  
measure Δγ using h-h (excluding protons) and Λ-p correlations, which  
reduces the flow-driven background."

It is not clear what you mean by
"We compare the results from different ESS recipes"

Different recipes utilizing what ?










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