STAR Flow, Chirality and Vorticity PWG

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

Dear Conveners,
 Thank you for your kind feedback on my abstract. I have incorporated your 
comments into the updated version, which can be found here: 
https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2023/Search-Chiral-Magnetic-and-Vortical-Effects-Using-Event-Shape-Select
 

 I would like to highlight that we have made some modifications to the 
introduction part to better explain the physics of chiral anomaly. Please let 
me know if you have any further comments. 

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

----- Original Message -----
From: "Prithwish Tribedy via Star-fcv-l" <star-fcv-l AT lists.bnl.gov>
To: "STAR Flow, Chirality and Vorticity PWG" <star-fcv-l AT lists.bnl.gov>
Sent: Tuesday, April 25, 2023 8:14:12 PM
Subject: Re: [Star-fcv-l] STAR presentation by Zhiwan Xu for Quark Matter 
2023  got commented by Prithwish Tribedy

Dear Zhiwan, Subhash,
This sentence is tricky because we're trying to say too much at once. We 
want to say that the B-field is bigger in Au+Au than in isobar 
collisions because of something, and also that lower collision energies 
mean the B-field lasts longer.
How about:

"The Au+Au system at lower beam energy has significant advantages over 
higher energy and the isobar systems because of the larger and longer 
magnetic field and higher vorticity."
-->
"The Au+Au system produces stronger magnetic fields than isobars, and 
collisions at lower beam energies have the advantage of producing 
longer-lasting magnetic fields and higher vorticities than higher energy 
collisions."

Best,
Prithwish



On 2023-04-25 21:11, subhash via Star-fcv-l wrote:
> Dear Zhiwan,
> 
> The abstract is in a good shape. I sign off with a few suggestions:
> 
> How about re-phrasing it "The Au+Au system at lower beam energy has
> significant advantages over higher energy and the isobar systems
> because of the larger and
> longer magnetic field and higher vorticity." --> The Au+Au system at
> lower beam energies has the advantage of having a stronger transient
> magnetic-field and a larger vorticity compared to higher energy
> collision systems.
> 
> "In utilizing pair particle ... " -->  Utilizing pair particle ...
> 
> Thanks and regards,
> Subhash
> 
> 
> On 2023-04-26 07:37 AM, Zhiwan Xu wrote:
>> 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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>> webmaster AT www.star.bnl.gov
>> 
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