STAR Flow, Chirality and Vorticity PWG

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

Dear Petr
Concerning on the same point on page 11 as Jiangyong mentioned, we’ve asked 
you 
to make sure the sign change of kaon vn ratio (and difference) at higher pT 
is real or 
it’s coming from pion contamination etc, which we did not hear you back on 
this particular 
issue, but it seems that you have now excluded the higher pT point from the 
plot, although 
you’ve shown us in the collaboration meeting up to higher pT and it was 
consistent with 
our previous publication, which might have the same issue as well, then we 
would need to 
correct the previous data, if this is really the case. Does that mean you do 
now think they 
are indeed affected by some PID problem at high pT? Since you’ve changed the 
plot in 
the last minutes after the last PWG, I would think we should be excluding 
these ratios (and 
differences) plots at least for kaon as a function of pT, until you explain 
us with more details 
especially in terms of the sign change trend with systematic error including 
PID purity etc. 
What do you think? 
Best regards, ShinIchi

> On Oct 2, 2020, at 20:59, Jiangyong Jia via Star-fcv-l 
> <star-fcv-l AT lists.bnl.gov> wrote:
> 
> Hi, Grigory and Petr,
> 
> The slides are nicely written, I don't have major comments on the structure 
> of the talk.
> 
> I have one question that I asked during Petr's presentation a couple weeks 
> ago.
> 
> Slide 11 when you show the difference and ratios between particle and 
> antiparticles, the errors are extremely small. 
> Do you assume the systematic uncertainty mostly cancel?  What about the 
> purity and efficiency of PID cut, I assume
> they will not cancel (yield of particles are anti-particles are different 
> at low energy)
> 
> thanks,
> 
> Jiangyong
> 
> n 10/2/20 6:47 AM, Grigory Nigmatkulov via Star-fcv-l wrote:
>> Dear Conveners,
>> 
>> Please take a look at the Petr Parfenov's slides and sign off you have no 
>> questions.
>> The conference starts on Monday.
>> 
>> Best regards,
>> Grigory, Arkadiy and Petr
>> 
>> On Wed, 23 Sep 2020 at 20:53, webmaster--- via Star-fcv-l 
>> <star-fcv-l AT lists.bnl.gov> wrote:
>> Dear star-fcv-l AT lists.bnl.gov members,
>> 
>> Grigory Nigmatkulov (nigmatkulov AT gmail.com) has submitted a material for a 
>>  
>> review, please have a look:
>> https://drupal.star.bnl.gov/STAR/node/52191
>> 
>> ---
>> If you have any problems with the review process, please contact  
>> webmaster AT www.star.bnl.gov
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