STAR Flow, Chirality and Vorticity PWG

[Sergei Voloshin <voloshin AT wayne.edu>]

Hi Gavin,

Thank you for presenting the simulation results of the efficiency as a function of phi_Psi. The variation is indeed rather small. What is the kaon tracking/PID efficiency you used? (I tried to find it in your previous presentation but could not... probably it was presented much earlier.)

The distribution I asked previously (the first one in your list in slide 17) is the _inclusive_ distribution of phi*-phi. This is the experimental distribution directly depending on the reconstruction efficiency. I wonder how this distribution compares to that from simulations?

I understand that this distribution can be different for real phi-mesons and background (I see it clearly when plotting moments of this distribution vs invariant mass, which for you might be difficult to do), but even combining everything together - how do they compare?

During today's meeting I also suggested to run the analysis using a random event plane. The idea of that check is to see if the signal  observed is indeed due to the elliptic flow, or if it comes from effects in the longitudinal direction. Similarly, one can use the "phi*" approach, as if the signal indeed is due to the spin alignment along the axis perpendicular to the event plane, two methods should lead to the same answer. For the paper only one, the "default", analysis/results can be used, but I think it is important to check different approaches for consistency of the results.

 

best regards,

Sergei

 

On Wed, Feb 7, 2024 at 1:58 AM Gavin Wilks via Star-fcv-l <star-fcv-l AT lists.bnl.gov> wrote:

Dear Convenors,

I apologize for the delay. My slides are attached to this email.

Best,
Gavin



> On Feb 5, 2024, at 12:04, Gavin Wilks <gwilks3 AT uic.edu> wrote:
>
> Dear Convenors,
>
> I would like to give an update at this week’s meeting. I will be following up on comments regarding the paper proposal “Differential measurements of phi-meson global spin alignment in Au+Au collisions at RHIC”.
>
> Best,
> Gavin
>
>> On Feb 5, 2024, at 05:22, zhchen via Star-fcv-l <star-fcv-l AT lists.bnl.gov> wrote:
>>
>> Dear All,
>>
>> We shall have our weekly FCV PWG meeting this Wednesday (7/Feb/2024) at 9:30 AM EDT. If you wish to present please let us know. 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*7C02*7Cgwilks3*40groute.uic.edu*7C24f09e58c0234c5236d808dc263ce1c6*7Ce202cd477a564baa99e3e3b71a7c77dd*7C0*7C0*7C638427290136338411*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C0*7C*7C*7C&sdata=NO9RD5Cb0MYD*2Bc*2Bz4sdUmqxsLapksGfbB72Rk5Bzbhc*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJQ!!P4SdNyxKAPE!GdK6nYEc-bDkLjdHRuyBEDLcjxJ2VhgvLvkIM8ZyMGd9Sq9cWfAELNJns_eK5lNUot0pyTNtPr7CLAr9npQeDn3D$
>> Please send us your slides by Tuesday. Zoom details are copied below.
>>
>> Thanks and regards,
>> Prithwish, Zhenyu and Subhash
>>
>>
>> ZOOM LINK FOR FCV MEETING:
>> Join ZoomGov Meeting
>> https://urldefense.com/v3/__https://nam04.safelinks.protection.outlook.com/?url="https*3A*2F*2Fbnl.zoomgov.com*2Fj*2F1612377416*3Fpwd*3DV3kvcnN5ZTRLVEc4U01QWUUycDQ1UT09&data=05*7C02*7Cgwilks3*40groute.uic.edu*7C24f09e58c0234c5236d808dc263ce1c6*7Ce202cd477a564baa99e3e3b71a7c77dd*7C0*7C0*7C638427290136338411*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C0*7C*7C*7C&sdata=fduhrH1IQ0PlY*2BqIjbHDPZRmLfiEy1NnqtVK8inZTwc*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUl!!P4SdNyxKAPE!GdK6nYEc-bDkLjdHRuyBEDLcjxJ2VhgvLvkIM8ZyMGd9Sq9cWfAELNJns_eK5lNUot0pyTNtPr7CLAr9nmoA97Y_$
>>
>> Meeting ID: 161 237 7416
>> Passcode: 106847
>>
>> One tap mobile
>> +16692545252,,1612377416#,,,,*106847# US (San Jose)
>> +16468287666,,1612377416#,,,,*106847# US (New York)
>>
>> Dial by your location
>>       +1 669 254 5252 US (San Jose)
>>       +1 646 828 7666 US (New York)
>>       +1 551 285 1373 US
>>       +1 669 216 1590 US (San Jose)
>> Meeting ID: 161 237 7416
>> Passcode: 106847
>> Find your local number: https://urldefense.com/v3/__https://nam04.safelinks.protection.outlook.com/?url="https*3A*2F*2Fbnl.zoomgov.com*2Fu*2FabVqdu5fbU&data=05*7C02*7Cgwilks3*40groute.uic.edu*7C24f09e58c0234c5236d808dc263ce1c6*7Ce202cd477a564baa99e3e3b71a7c77dd*7C0*7C0*7C638427290136338411*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C0*7C*7C*7C&sdata=jaCoOWQWdsIBVt3VOUi8Odf90*2FIuzpxm8xqLDMGyPMo*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJQ!!P4SdNyxKAPE!GdK6nYEc-bDkLjdHRuyBEDLcjxJ2VhgvLvkIM8ZyMGd9Sq9cWfAELNJns_eK5lNUot0pyTNtPr7CLAr9nmORSgSo$
>>
>> Join by SIP
>> 1612377416 AT sip.zoomgov.com
>>
>> Join by H.323
>> 161.199.138.10 (US West)
>> 161.199.136.10 (US East)
>> Meeting ID: 161 237 7416
>> Passcode: 106847
>> _______________________________________________
>> Star-fcv-l mailing list
>> Star-fcv-l AT lists.bnl.gov
>> https://urldefense.com/v3/__https://nam04.safelinks.protection.outlook.com/?url="https*3A*2F*2Flists.bnl.gov*2Fmailman*2Flistinfo*2Fstar-fcv-l&data=05*7C02*7Cgwilks3*40groute.uic.edu*7C24f09e58c0234c5236d808dc263ce1c6*7Ce202cd477a564baa99e3e3b71a7c77dd*7C0*7C0*7C638427290136338411*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C0*7C*7C*7C&sdata=uQ5f8xWHi3Wf3j3SBPTkOqgTMRzKdl9heUHtrHOx75I*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJQ!!P4SdNyxKAPE!GdK6nYEc-bDkLjdHRuyBEDLcjxJ2VhgvLvkIM8ZyMGd9Sq9cWfAELNJns_eK5lNUot0pyTNtPr7CLAr9nqqdY0bl$
>

_______________________________________________
Star-fcv-l mailing list
Star-fcv-l AT lists.bnl.gov
https://lists.bnl.gov/mailman/listinfo/star-fcv-l

--

======================================
 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
======================================