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star-fcv-l - Re: [Star-fcv-l] FCV PWG meeting on 01/November/2023 Wed. 9:30 AM EDT

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Subject: STAR Flow, Chirality and Vorticity PWG

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Re: [Star-fcv-l] FCV PWG meeting on 01/November/2023 Wed. 9:30 AM EDT

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  • From: Sooraj Radhakrishnan <skradhakrishnan AT lbl.gov>
  • To: "STAR Flow, Chirality and Vorticity PWG" <star-fcv-l AT lists.bnl.gov>
  • Subject: Re: [Star-fcv-l] FCV PWG meeting on 01/November/2023 Wed. 9:30 AM EDT
  • Date: Mon, 6 Nov 2023 15:39:54 -0800
Hi Gavin,
   Thanks for the nice presentation with many details. Sorry, I could not attend your talk at the PWG meeting last week. Could please answer a few questions I have on your slides?

S8: Why is the input phi distribution flat in rapidity? Is this a reasonable choice at these low energies? Did you have any evaluation of systematic uncertainty if you input a rapidity dependent distribution? I had asked this before, but did not get a response from you
S8: Do you have an acceptance plot in pT - rapidity for the reconstructed phi mesons?

S15: From what I understand from your back up slide (S.25), the error band on the theory curve is from the uncertainties on rho_00 measurements in the data. In that case, the band can be misleading, particularly as the BES-I uncertainties were large. Do you know if the lower end of the error band corresponds to the lower end of variation in data? Can we get a set of values for the curve from the theorists for +-2 sigma range from BES-I of rho_00s (at least of rho_00^y), so that we can update the curve with the uncertainties and values corresponding to BES-II measurements? (My point is we should get the calculations without telling the theorists what our BES-II measurements are, and I know the data points are different from our Preliminary for BES-II)  

S13: With the BES-II data, can we extend the measurements to lower pT? At LHC, rho_00 < 1/3 was observed for low pT, do we also see similar trend at lower energies at RHIC? What is the reason for stopping at 1.5 GeV/c? 

thanks
Sooraj

On Wed, Nov 1, 2023 at 4:54 PM Sergei Voloshin via Star-fcv-l <star-fcv-l AT lists.bnl.gov> wrote:
Dear Gavin,

Unfortunately I was not able to attend the meeting. I looked through your slides but could not find answers to several important (from my point of view) questions:
- Did you try to get an efficiency for phi reconstruction as a function of the relative angle of one of the daughters to the phi momentum? 
- What values of phi v2(pt) were used?
- How large is the effect of elliptic flow "entanglement" with the efficiency to rho00 calculations? (again you can see my presentation, if it is not clear what I mean here).

best regards,
Sergei


On Tue, Oct 31, 2023 at 12:26 PM Gavin Wilks via Star-fcv-l <star-fcv-l AT lists.bnl.gov> wrote:
Dear Conveners,

I would like to present some slides at this week’s meeting regarding a paper proposal titled: “Differential measurements of φ-meson global spin alignment in Au+Au collisions at RHIC”.

Best,
Gavin

> On Oct 29, 2023, at 21:58, subhash via Star-fcv-l <star-fcv-l AT lists.bnl.gov> wrote:
>
> Dear All,
>
> We shall have our weekly FCV PWG meeting this Wednesday (01/Nov/2023) at 9:30 AM EDT. If you would like to present please let us know. Please try posting your slides by Tuesday. The agenda will be collected at: https://urldefense.com/v3/__https://nam04.safelinks.protection.outlook.com/?url="https*3A*2F*2Fdrupal.star.bnl.gov*2FSTAR*2Fblog*2Fjjiastar*2Fbulkcorr&data=05*7C01*7Cgwilks3*40groute.uic.edu*7C2cf353dcaea34799102808dbd8f42c46*7Ce202cd477a564baa99e3e3b71a7c77dd*7C0*7C0*7C638342315463237743*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=7TaVBSaFStsQSg8WcaUNdHwJB1bBjhS3obMNIlK5DnI*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSU!!P4SdNyxKAPE!Bqgg_Pbnmg8IXawxhk0poc0O3PTc3VNZldVfbvf84Xi0NyZciPXxDur7C4k9KCFUnW3U6T6l_Kf8Vl2dL5OuzvkI$
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--
======================================
 Sergei A. Voloshin    
 Distinguished Professor, 
 Department of Physics and Astronomy,
 Wayne State University,
 666 W. Hancock,  Detroit,  Michigan,  48201
 e-mail: sergei.voloshin AT wayne.edu
======================================
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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

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