STAR Flow, Chirality and Vorticity PWG

[EsumiShinIchi <esumi.shinichi.gn AT u.tsukuba.ac.jp>]

Dear Prithwish, Rich and Zhengxi

cn(A,B) = vnA * vnB

We divide by the denominator, if you substitute all 3 terms inside the sqrt(), 

it will become vnB, therefore we can get vnA with the attached formula. 

Although this vnB has effects from B-C and B-D, however this vnB dictated 

by the correlation between C and D, depending on the choice of delta_eta,

which is exactly same as TPC-TPC 2-particle correlation. Therefore this choice 

of 3-sub does not really give an independent results from TPC alone analysis. 

If you use EPDe-EPDw correlation or if you sub-divide EPDe to get the vnB, 

in order to divide cn(A,B) for vnA measurement, we could say this is indeed 

a qualitatively independent measurement/result. But the current choice is not 

really independent, since 2 out of 3 come from TPC (to get the vnB) in the 

current 3-sub case. 

As Zhengxi has been trying earlier with other 3-sub choices, like these above 

"EPDe-EPDw” or “sub-dividing EPDe” could be tough, because of significant 

de-correlation and/or non-flow, but we do need to try including these, otherwise 

we can not say this is an independent test, as we would not like to repeat the 

same mistake that PHENIX has made, (it’s in the opposite direction, though. ;) 

Best regards, ShinIchi

2024/10/02 9:07、Zhengxi Yan <zhengxi1yan AT gmail.com>のメール:

Dear all,

Please find my presentation on the page below:

https://drupal.star.bnl.gov/STAR/blog/zyan/pwg-dAu-flow-TPCEPD-centrality

Best,

Zhengxi

On Tue, Oct 1, 2024 at 7:13 PM Shengli Huang <star-fcv-l AT lists.bnl.gov> wrote:

Dear All,

    You can find my slide via link below:

https://drupal.star.bnl.gov/STAR/blog/slhuang/paper-proposal

Thanks

Shengli

On Mon, Sep 30, 2024 at 9:04 AM Shengli Huang <shengli.huang AT stonybrook.edu> wrote:

Dear All,

    I would like to give a presentation for a paper proposal about flow measurement in OO and dAu from run21.

Thanks!

Shengli

On Mon, Sep 30, 2024 at 5:40 AM subhash <subhash AT rcf.rhic.bnl.gov> wrote:

Dear All,

We shall have our weekly FCV PWG meeting this Wednesday
(02/October/2024) at 9:30 AM EDT. If you wish to present please let us
know. The agenda will be collected at:
https://drupal.star.bnl.gov/STAR/blog/jjiastar/bulkcorr
Please send us your slides by Tuesday. Zoom details are copied below.

** This week we plan to accommodate short analysis/status updates
related to intended QM abstracts. Other contributions are welcome, but
it may be moved to next weeks depending on the time we will have after
the QM related discussions **

Please take a note of the QM abstract deadlines:
Oct 1: deadline to express interest in FCV (see email from Richard)
Oct 10: FCV abstracts to be submitted to Drupal
Oct 31: submission to QM


Thanks and regards,
Richard, Prithwish and Subhash


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