STAR Flow, Chirality and Vorticity PWG

[胡晨露 <huchenlu AT impcas.ac.cn>]

Dear ShinIchi,

Thank you very much for your comments.

For your question:

1)Do you know why the yield reduces in central again even considering smaller 
(5% or less?) centrality steps for the last 2 bins compared to other 10% bins?

Answer: Actually I don't know why the raw yield distribution like this. These 
are results what I got from data. Probably, these distributions are related 
to their production mechanism.

2) I understood the S/N would be worse in central, while the centrality 
dependence of the yields, that you have attached in one of the previous 
E-mail, can be explained by the efficiency?

Answer: I think reconstruction efficiency has a weak dependence on centrality 
(this needs to be checked in the future). For moment, the centrality 
integrated reconstruction efficiency of H3L and H4L are applied in the direct 
flow analysis. As far as I know Yue-hang is working on the yield of H3L and 
H4L in the 3 GeV data.

3)For the numbers you wrote in your abstract, H4L is mostly unchanged,but H3L 
numbers are quite reduced from your presentation slide in the PWG (September 
16, 2020), why?

Answer: There are two reasons caused the changes of H4L and H3L candidate 
number: 1) the reconstruction cuts for H3L and H4L are optimized for the 
newly produced data; 2) H3L and H4L candidate numbers in the abstract are 
obtained with applying the phase space cut which we used for the flow 
analysis. In the last PWG talk, we presented the total number of candidates.

Thanks best regards,

Chenlu 

> -----原始邮件-----
&gt; 发件人: "ShinIchi Esumi via Star-fcv-l" <star-fcv-l AT lists.bnl.gov>
&gt; 发送时间: 2021-02-04 12:17:11 (星期四)
&gt; 收件人: "STAR Flow, Chirality and Vorticity PWG" <star-fcv-l AT lists.bnl.gov>
&gt; 抄送: 
&gt; 主题: Re: [Star-fcv-l] STAR presentation by Chenlu Hu for CPOD March 
Meeting 2021 submitted for review
&gt; 
&gt; Dear Chenlu
&gt; I would sign off your nice abstract with a few questions.  
&gt; Do you know why the yield reduces in central again even 
&gt; considering smaller (5% or less?) centrality steps for the 
&gt; last 2 bins compared to other 10% bins? I understood the 
&gt; S/N would be worse in central, while the centrality dependence 
&gt; of the yields, that you have attached in one of the previous E-mail, 
&gt; can be explained by the efficiency? For the numbers you wrote in 
&gt; your abstract, 4LHe is mostly unchanged, but 3LHe numbers are 
&gt; quite reduced from your presentation slide in the PWG 
&gt; (September 16, 2020), why? 
&gt; Best regards, ShinIchi
&gt; 
&gt; &gt; 2021/02/04 0:05、胡晨露 via Star-fcv-l <star-fcv-l AT lists.bnl.gov>のメール:
&gt; &gt; 
&gt; &gt; Dear Jiangyong,
&gt; &gt; 
&gt; &gt;    Thank you very much for your comments.
&gt; &gt; 
&gt; &gt;    The CPOD abstract is updated accordingly. Updated abstract has 
been uploaded to below drupal link.
&gt; &gt; 
&gt; &gt;    https://drupal.star.bnl.gov/STAR/node/53562
&gt; &gt; 
&gt; &gt; Thanks and best regards
&gt; &gt; 
&gt; &gt; Chenlu
&gt; &gt; 
&gt; &gt; 
&gt; 
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