STAR Flow, Chirality and Vorticity PWG

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

Dear Diyu
Could you please tell me the importance on the azimuthal acceptance 
correction 
for the PIDed particle for this measurement? Do you see any difference 
between 
X and Y contributions of the event plane resolution from ZDC? For your a1 
parameter (sin term in stead of cos), they are mostly zero, but some of the 
delta_a1 parameters are comparable to delta_v1, which might be needed to 
be studied and discussed more in the PWG, which could be important and 
interesting, is it somewhat significant only for pi+/pi-?  Do you understand 
why 
the signal seems to be stronger including phi-weighting correction (default) 
than 
without the weighting correction? Do you use other event plane information 
from 
TPC or BBC or EPD to determine the resolution of ZDC? Could you describe a 
little more about how you determine (and calibrate) the event plane to get 
the 
event plane and resolution? (1) gain correction on each strip in ZDC/SMD, 
(2) re-centering of Qx and Qy, (3) Fourier flattening of Psi. Everything is 
done 
as a function of centrality and z-vertex? Then get the resolution by two-sub 
method with chi extraction etc...
Best regards, ShinIchi

> On Mar 1, 2022, at 18:38, dshen via Star-fcv-l <star-fcv-l AT lists.bnl.gov> 
> wrote:
> 
> Dear Conveners and all,
> 
> Please find the slides for our updates via link below:
> https://drupal.star.bnl.gov/STAR/system/files/Updates%20on%20paper%20proposal%20II.pdf
> 
> We also prepared a draft of analysis note for your reference:
> https://drupal.star.bnl.gov/STAR/system/files/main_11.pdf
> 
> This update mainly focus on addressing the comments collected in my last 
> presentation.
> Just a quick reminder, those comments are:
> 
> General recommendation:
> Combine relevant items from various presentation materials and prepare
> a document with analysis details in one place and share with FCV. This
> will help focus our discussion, help experts to pinpoint their
> comments and save time for PAs and everyone. Also, this document can
> eventually metamorphose into the analysis note. While making further
> materials please consider addressing the following points, maybe make
> small notes on the points.
> 
> i) Estimate Delta_v1 expected from coulomb interaction in peripheral 
> collisions
> 
> ii) Address how to understand large Delta_v1 is seen for protons and
> not for kaons and pions.
> 
> iii) It seems we see a difference in "Delta_v1" vs "y" between Au,
> Zr+Ru species. How do we understand this system size dependence?
> 
> v) Consider adding differential v1 measurements, pt differential v1,
> v1 separately for Zr+Zr and Ru+Ru species (if statistics is not enough
> can consider two pt bins for example). If <pT> values are different
> between different species it will be good to show the pT dependence
> for each species even with two pt bins.
> 
> vi) Is it possible to estimate the relative contribution of
> transported quark in Delta_v1?
> 
> vii) Consider a model calculation w/o EM field (e.g. UrQMD, AMPT) to
> strengthen the point that the centrality dependent sign change cannot
> be reproduced by non EM-field effects.
> 
> viii) Short summary for why PRX (250 words) will be useful. Usually
> published along with paper. For now even a short para will be helpful
> to move forward (e.g. during PWGC proposal).
> 
> Thanks,
> Diyu
> 
> 
> On 2022-03-01 15:08, dshen via Star-fcv-l wrote:
>> Dear Conveners,
>> I would like to give an update on the research of change splitting of
>> v1 in Au+Au and isobar collisions at 200 GeV.
>> The slides will be send later.
>> Best,
>> Diyu
>> On 2022-02-28 14:34, subhash via Star-fcv-l wrote:
>>> Dear All,
>>> We shall have our FCV PWG meeting this Wednesday (02/Mar/2022) at 9:30
>>> AM in BNL (NY time zone). If you would like to present, please let us
>>> know. Please try posting your slides by Tuesday. The agenda items will
>>> be collected at:
>>> https://drupal.star.bnl.gov/STAR/blog/jjiastar/bulkcorr
>>> Thanks and regards,
>>> Jiangyong, Prithwish and Subhash
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