STAR Flow, Chirality and Vorticity PWG

[ChunJian Zhang <chun-jian.zhang AT stonybrook.edu>]

Dear Prithwish,

Thank you for the comments. Skewness is <(\delta p_T)^3> which is also can be 
called moments since they are the same when one does it from mean, variance 
to skewness. Note that kurtosis defined as <(\delta p_T)^4> - 3<(\delta 
p_T)^2> is different from the moments. 

Others like <(\delta p_T)^3>/<p_T>^3  and <(\delta p_T)^3>/<(\delta 
p_T)^2>^3/2 are different normalization ways. 

So, here we call <(\delta p_T)^3> as skewness is appropriate. 

Best regards
Chunjian 


> On Oct 24, 2022, at 11:53 AM, Prithwish Tribedy via Star-fcv-l 
> <star-fcv-l AT lists.bnl.gov> wrote:
> 
> Dear Chunjian,
>  Thanks for incorporating my comments. Please note that the quantity you 
> are showing on slide#8 (lower right plot) is the ratio of <(\delta 
> p_T)^3>/<p_T>^3 -- this quantity is not Skewness.
> 
> In terms of your notations "Skewness" will be something like: "<(\delta 
> p_T)^3>/<(\delta p_T)^2>^3/2. Since you're not plotting that so we should 
> not be calling it Skewness.
> 
> I think we should refer the quantity <(\delta p_T)^3>/<p_T>^3 as "Scaled 
> third order moment" or "Normalized third order moment".
> 
> On conclusion slide we can say:
> "enhancement in variance and skewness ratios" --> "enhancement in variance 
> and third order fluctuation ratios"
> 
> Best,
> Prithwish
> 
> 
> On 2022-10-24 09:50, ChunJian Zhang wrote:
>> Dear Prithwish,
>> Thank you for the helpful comments. With including all the
>> suggestions, please find the new version at
>> https://drupal.star.bnl.gov/STAR/presentations/DNP-2022/Measurement-nuclear-deformation-high-energy-isobaric-96Ru96Ru-and-96Zr96Zr--0
>> Please find the comments included and addressed as follows:
>>> Side#3:
>>> Define "0\nu\beta\beta" somewhere on this slide.
>>> "Rarely experimental measurements" --> "Few experimental
>>> measurements" or "Rarely explored in experiment”
>> Changed
>>> Slide#4: "based on N_{ch}^{offline} with" --> "based on uncorrected
>>> tracks (N_{ch}^{offline}) in”
>> Changed
>>> Slide#6: Some texts are overlapping, the page number is hidden.
>> Changed
>>> Miner & optional comment: the references are not written in
>>> conventional  formats (like Zhang and Jia, PRL 128, 022301 (2022)).
>> Changed
>>> "cancelation" --> "cancellation"
>> Changed
>>> It is not clear what you mean by "cancellation expected in
>>> non-central collisions". What gets cancelled with what? Also, this
>>> is approximately true, right ? Then maybe say "approximate
>>> cancellation”
>> Added “approximate". The effect from Beta_3 canceled the v2 ratios.
>>> The 4th bullet is a bit confusing, right? What do you mean by this?
>>> It depends on how the size is defined. Larger neutron skin means
>>> large size, so there's an apparent contradiction between the 3rd and
>>> the 4th bullets.
>>  added "R0"
>>> Slide#7:
>>> "non-linear" --> "Nonlinear" in title and everywhere
>> Changed
>>> "reflect nuclear structure" --> "reflects difference in nuclear
>>> structure”
>> Changed
>>> It's impossible to see what you're plotting on the two right
>>> figures. At least write in bigger fonts that you're plotting "Mean
>>> ratio" and "Third moment ratio”
>> Add large labels
>>> Slide#8: "Study nuclear structure" --> "Study of nuclear structure"
>>> "increase in central" --> "increase in central collisions"
>> Changed
>>> It is very difficult to read what is plotted on the
>> Add large labels
>>> Slide#9: Add "More investigation using STAR data is underway”
>> Added
>>> It is not clear what your conclusion is from the data-model
>>> comparison on the right. Can you please add a short sentence.
>> Add one more sentence.
>>> Slide#10: "identical for Ru and Zr in final state as expected" -->
>>> "consistent between Ru+Ru and Zr+Zr as expected"
>>> While talking do mention that "as is it driven by final state
>>> effects”
>> Changed and will follow your nice suggestions.
>>> "variance and skewness" --> You didn't show skewness, maybe say
>>> "variance and third order moment”
>> We showed the skewness  in the right lower plot on slide 8th
>>> Add "more studies underway" in the last bullet.
>> Added
>> Best regards
>> Chunjian
>>> On Oct 23, 2022, at 6:43 PM, Prithwish Tribedy via Star-fcv-l
>>> <star-fcv-l AT lists.bnl.gov> wrote:
>>> Dear ChunJian,
>>> Very nice slides. Here are my comments. With these included, I sign
>>> off.
>>> General comment: some of the fonts you have used are too small.
>>> Side#3:
>>> Define "0\nu\beta\beta" somewhere on this slide.
>>> "Rarely experimental measurements" --> "Few experimental
>>> measurements" or "Rarely explored in experiment"
>>> Slide#4: "based on N_{ch}^{offline} with" --> "based on uncorrected
>>> tracks (N_{ch}^{offline}) in"
>>> Slide#6: Some texts are overlapping, the page number is hidden.
>>> Minor & optional comment: the references are not written in
>>> conventional  formats (like Zhang and Jia, PRL 128, 022301 (2022)).
>>> "cancelation" --> "cancellation"
>>> It is not clear what you mean by "cancellation expected in
>>> non-central collisions". What gets cancelled with what? Also, this
>>> is approximately true, right ? Then maybe say "approximate
>>> cancellation"
>>> The 4th bullet is a bit confusing, right? What do you mean by this?
>>> It depends on how the size is defined. Larger neutron skin means
>>> large size, so there's an apparent contradiction between the 3rd and
>>> the 4th bullets.
>>> Slide#7:
>>> "non-linear" --> "Nonlinear" in title and everywhere
>>> "reflect nuclear structure" --> "reflects difference in nuclear
>>> structure"
>>> It's impossible to see what you're plotting on the two right
>>> figures. At least write in bigger fonts that you're plotting "Mean
>>> ratio" and "Third moment ratio"
>>> Slide#8: "Study nuclear structure" --> "Study of nuclear structure"
>>> "increase in central" --> "increase in central collisions"
>>> It is very difficult to read what is plotted on the
>>> Slide#9: Add "More investigation using STAR data is underway"
>>> It is not clear what your conclusion is from the data-model
>>> comparison on the right. Can you please add a short sentence.
>>> Slide#10: "identical for Ru and Zr in final state as expected" -->
>>> "consistent between Ru+Ru and Zr+Zr as expected"
>>> While talking do mention that "as is it driven by final state
>>> effects"
>>> "variance and skewness" --> You didn't show skewness, maybe say
>>> "variance and third order moment"
>>> Add "more studies underway" in the last bullet.
>>> Best,
>>> Pritwish
>>> On 2022-10-14 15:41, webmaster--- via Star-fcv-l wrote:
>>>> Dear star-fcv-l AT lists.bnl.gov members,
>>>> ChunJian Zhang (chun-jian.zhang AT stonybrook.edu) has submitted a
>>>> material for
>>>> a review, please have a look:
>>>> https://drupal.star.bnl.gov/STAR/node/61340
>>>> Deadline: 2022-10-27
>>>> ---
>>>> If you have any problems with the review process, please contact
>>>> webmaster AT www.star.bnl.gov
>>>> _______________________________________________
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