STAR Flow, Chirality and Vorticity PWG

[Sooraj Radhakrishnan <skradhakrishnan AT lbl.gov>]

Hi Aditya,

    These are nice results and presentation. 

It seems that you are showing too many results and too many quantities. You also have 18 slides, may be difficult to go through in the allocated time. One option would be to show the most interesting results for each type of measurement and point to the posters for more details 

Also, for your information, meanfield calculations do give negative delta v_1 in peripheral events without contribution from EM fields. You can see from S12 here https://drupal.star.bnl.gov/STAR/system/files/DirectedFlow_Proton_JAM_BES.pdf that the delta v_1 between protons and antiprotons is negative (the quantity on the right plot is delta v_1 except for a scale factor - see S3) for peripheral events, with meanfield interactions. 

Please find a few other comments below

S3: Please use a new version with iTPC and ETOF. Also, with the iTPC, charged particle tracking extends to |eta| < 1.5 

S4: Sensitive to --> Present in?

S4: EP does not necessarily contain the impact parameter direction, can remove this

S4: May be a sub-title above the flow discussion?

S5: Remove 'positively and negatively'

S14: Why are these quantities more sensitive to initial state effects and not sensitive to medium properties?

S15: You havent defined rho_2,4 etc 

S15: Where is the conclusion drawn from?

S18: 'more negative for lower collision energies ...' Is this trivial to expect? Given its the Faraday contribution that dominates and its the interplay of two opposing contributions, is a slower rate of decrease of B field and longer presence of Hall effect expected to give larger negative Delta v1?

Best,

Sooraj

On Fri, Aug 25, 2023 at 12:51 AM ADITYA PRASAD DASH via Star-fcv-l <star-fcv-l AT lists.bnl.gov> wrote:

Dear Conveners,

We have added the AMPT model comparisons to r2 and r3 and the updated presentation can be found at the same link https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2023/Exploringelectromagneticfieldeffectsandconstrainingtransportparame-0

Thanks,

Aditya

On Tue, Aug 22, 2023 at 12:47 PM ADITYA PRASAD DASH <adityadash55 AT g.ucla.edu> wrote:

Hi Zhenyu,

Thanks for the useful comments. They have been implemented and the updated version of the presentation can be found at the same link https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2023/Exploringelectromagneticfieldeffectsandconstrainingtransportparame-0 .

Thanks again,

Aditya

On Mon, Aug 21, 2023 at 12:02 AM webmaster--- via Star-fcv-l <star-fcv-l AT lists.bnl.gov> wrote:

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

Zhenyu Chen ( zhenyuchen AT sdu.edu.cn ) has commented on a material originally 
submitted by Aditya Prasad Dash ( adityaprasaddash55 AT gmail.com ) at
https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2023/Exploringelectromagneticfieldeffectsandconstrainingtransportparame-0

Comment:
Dear Aditya,

Nice slides. Please find few suggestions below:
- Slide2: remove "correlations sensitive to"
- Slide3: title font is different
- Slide4: you have the equations for vn(v1) without any text, please consider 
adding at least few words
- Slide5: should "4.Transported..." be separated from 1-3? Since it is not 
"different forces"
- Slide6: dv1/dy(h^+) -> dv1(h^+)/dy
- Slide11: flow vectors -> event planes
- Slide11: and non-flow -> or non-flow
- Slide14: title is constraining initial-state, but longitudinal 
de-correlations is also a constraint on initial state, please try to organize 
better

Cheers,
Zhenyu

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--

Sooraj Radhakrishnan

Research Scientist,

Department of Physics

Kent State University

Kent, OH 44243

Physicist Postdoctoral Affiliate

Nuclear Science Division
Lawrence Berkeley National Lab
MS70R0319, One Cyclotron Road

Berkeley, CA 94720

Ph: 510-495-2473

Email: skradhakrishnan AT lbl.gov