STAR Flow, Chirality and Vorticity PWG

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

Dear Xionghong
Thank you very much, it's now completely clear for me. 
I think the slides for the CPOD is OK, but for our future discussion, 
I would like to see these calculated dphi distribution overlaid to the 
measured d, t, 3He, 4He dphi distributions. You could also calculate 
d[N(proton)^n]/dphi after normalizing the proton dN/dphi distribution, 
where N to be 1.0 in average, which should reflect the proper statical 
error coming from proton measurements and would have the same 
shape as your generated distribution. Thanks again. 
Best regards, ShinIchi

> On Mar 11, 2021, at 12:33, Xionghong He via Star-fcv-l 
> <star-fcv-l AT lists.bnl.gov> wrote:
> 
> Dear ShinIchi,
> The points in each panel is from a histogram generated by (proton 
> dN/dphi)^n function.
> I draw the points because I want show that the fit functions can fit the 
> generated dN/dphi distributions.
> For the fluctuations, it is due to the entries I genereted for each panel. 
> If I increase the entries,
> all distributions will be smooth, as shown in the updated slides.
> Thank you and best regards,
> Xionghong
> 
> 在 2021/3/11 10:56, ShinIchi Esumi via Star-fcv-l 写道:
>> Dear Xionghong
>> Sorry for sending several times, what are the data points in the top 3 
>> panels
>> of the page 15? If you just manipulate/apply "()^n" to the fitted function 
>> on the proton
>> data, you do not need data points in each panel, since you just need the 
>> fitted function.
>> However I see the relative point-to-point fluctuation of data seems to be 
>> reduced
>> going from left panel (n=2) to the right panel (n=4), which sounds counter 
>> intuitive,
>> if you really manipulate "()^n" to the data points, or?
>> Best regards, ShinIchi
>> 
>>> On Mar 11, 2021, at 11:19, ShinIchi Esumi 
>>> <esumi.shinichi.gn AT u.tsukuba.ac.jp> wrote:
>>> 
>>> Dear Xionghong
>>> Thanks you for the quick answer. I understand it’s getting messy, but you
>>> do the full scaling on the right panel, so I do still prefer to show the 
>>> raw data
>>> without scaling on the left panel (as the same color points do not 
>>> overlap),
>>> but this is, of course, up to you.
>>> 
>>> Thanks again, now it’s clear what you did for the coalescence test on p15,
>>> the data points in all 3 panels are all proton data, right?  Could you 
>>> please
>>> add (as I would also like to see) the raw proton data (so 4 top panels in 
>>> total)
>>> as well as one additional line for A=1 in the lower panels, although it’s 
>>> just
>>> on the proton data point by definition. What do you think about changing
>>> color of the cross point to blue in the lower panels for 3He to be 
>>> compared
>>> with the blue line.
>>> Best regards, ShinIchi
>>> 
>>>> On Mar 11, 2021, at 10:47, Xionghong He via Star-fcv-l 
>>>> <star-fcv-l AT lists.bnl.gov> wrote:
>>>> 
>>>> Dear ShinIchi,
>>>> 
>>>> 
>>>> Thank you very much for your comments.
>>>> 
>>>> The updated slides are at the same link
>>>> 
>>>> https://drupal.star.bnl.gov/STAR/node/54117.
>>>> 
>>>> Please check the replies below.
>>>> 
>>>>> p12 left, especially since you do a full scaling on the right panel, I 
>>>>> would
>>>>> like to see it without any scaling factor in vertical axis (at least 
>>>>> for the left panel),
>>>>> where the same color does not overlap even without scaling, right?
>>>> A: If I draw different rapidity distributions in one plot and do not 
>>>> scale the vertical axis,
>>>> 
>>>> the plot looks messy, as shown in 
>>>> https://drupal.star.bnl.gov/STAR/system/files/v1pt.pdf.
>>>> 
>>>>> p15 top 3 panels. What are they (p, d,,,) at what pT? What are the 
>>>>> difference
>>>>> between 3 panels? The vertical axis tells the power n=2,3,4 for the 
>>>>> (formula)^n,
>>>>> but the legend Inside the panel are all same for 3 panels. Probably, 
>>>>> you determine
>>>>> the p1 and p2 with proton, then you are applying these parameters to 
>>>>> the deuteron
>>>>> and triton data with assumed formula? You need more explanations in the 
>>>>> slide,
>>>>> especially for the lines in the lower two panels etc. For this purpose, 
>>>>> I would
>>>>> choose to use “blue color” for plotting the 3He data...
>>>> A: For protons, I got the dN/dphi disribution by the first formula in 
>>>> p14, where the v1 and the v2 were
>>>> 
>>>> the value of data in each rapidity bin. Following the secend formula in 
>>>> p14, the n=2,3,4 power of these
>>>> 
>>>> proton dN/dphi distributions were the three top panels in p15.
>>>> 
>>>> Then I used "1+2p1cos(phi)+2p2cos(2phi)" to fit them and extracted p1 
>>>> and p2 in each
>>>> 
>>>> rapidity bin, and the lines in the two bottom plots were these extracted 
>>>> p1 and p2.
>>>> 
>>>> I updated the slide 15 to make it clear.
>>>> 
>>>> 
>>>> Thank you and best regards,
>>>> 
>>>> Xionghong
>>>> 
>>>> 
>>>>>> On Mar 8, 2021, at 17:49, webmaster--- via Star-fcv-l 
>>>>>> <star-fcv-l AT lists.bnl.gov> wrote:
>>>>>> 
>>>>>> Dear star-fcv-l AT lists.bnl.gov members,
>>>>>> 
>>>>>> Xionghong He (hexh AT impcas.ac.cn) has submitted a material for a review,
>>>>>> please have a look:
>>>>>> https://drupal.star.bnl.gov/STAR/node/54117
>>>>>> 
>>>>>> ---
>>>>>> If you have any problems with the review process, please contact
>>>>>> webmaster AT www.star.bnl.gov
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