STAR Flow, Chirality and Vorticity PWG

[subhash <subhash AT rcf.rhic.bnl.gov>]

Dear Chunjian,

Thanks for addressing my comments. I sign off after the following 
comments are addressed. Since your proceedings have passed the 
conference deadline, I am also sending it to the star-talk list.

I think the title sounds better with:
An Overview of new measurements of flow, chirality, and vorticity from 
STAR experiment

line 14: for the precision measurements
the STAR's future --> STAR's future
line 22-24: Check the sentence again, if possible break it up into two. 
A few suggestions: "After the collision, the subsequent fluid motion and 
the expansion of medium ...", remove "composition"
line 31: do you mean electromagnetic and transport properties
line 35: which is known as Chiral Magnetic Effect (CME).
line 37: is being pursued
line 38: non-central heavy ion
line 40: Suggest a rephrase: The vorticity of the fluid and the spin 
orbit coupling could lead to ...
line 44: Xi^{-}, Omega^{-}
FXT mode --> I think low energy is more important than FXT. So mention 
the energy range of FXT program
line 60: do you mean hydrodynamic model with IP-Glasma, MUSIC and UrQMD 
? Then rephrase like this
line 62: calculations
line 75: do you mean better or proper nonflow treatment?
what is meant by detector acceptance, do you mean enhanced acceptance?
use comma after the "and"s
various other collision systems, such as O+O, could provide additional 
constrains and insights on the origin of the near-perfect fluidity in 
QGP in small system collisions.
line 90: Can rephrase like \Rho offers information of the initial 
geometry ....
line 109: observed for the first time
line 118: shape and size are strongly correlated ...
line 122: method is established and detailed in
line 168: do you mean disappearance of partonic collectivity?
line 172: Rephrase like: directed flow can depend on ..., remove 
"properties", add "nature of phase transition"
line 177: Interestingly, the observed difference between pi+ and pi- 
might be due to the ....
line 186: "expectations from isobar collisions" --> do you mean 
schematic diagram for isobar collisions
line 189: do you mean difference in \gamma correlator?
line 206: BES-II data and FXT mode are necessary.
line 208: newly added ... in 200 GeV Au+Au collisions.
line 223: efficiently finished the bonus d+Au runs
line 226: numerous important
line 233: I would rephrase "Lots of theoretical model calculations..." 
--> Theoretical model calculations are necessary to understand ....
line 235: what is meant by unusual?
line 243: what is meant by "formed there"?
line 253: disentangle between what?
line 260: "baryon". The meaning of the sentence is not clear, please 
rephrase.
line 273: collectivity measurements in FXT


Thanks and regards,
Subhash



On 2022-03-15 12:03 AM, Chunjian Zhang wrote:
> Dear Subhash,
>
> Thank you for your kind comments. Please find the revised draft in
> https://drupal.star.bnl.gov/STAR/system/files/ICNFP_Proceeding_CZhang_v2.pdf
>
> Please let me know if have further nice comments. thank you.
>
> > At several places, you used "so-called". I would suggest to remove it.
> Done. Only two places, now I remove one.
> > title: An Overview of flow, chirality and vorticity measurements from 
> > STAR experiment
> I would like to keep the “New” to mention people this is the 1-2 years
> STAR results.
> > line 22: "After the collision, ... hadronic phase composition." --> 
> > Rephrase it. You can try split up the sentence.
> revised
> > line 25: "explore fundamental physics." --> I would suggest specifying 
> > which fundamental physics.
> here the fundermental means “all possible direction in heavy-ion”.
> > line 37: "is one of our modern motivations for more than a decade." 
> > --> Remove.
> done. revised it.
> > line 41: vortical structure of the medium and it's transport 
> > properties
> it’s not “it’s” or “its”. I would like to keep hydrodynamical. that’s
> different.
> > line 42: Conside rephrasing the sentence. Remove "Further". I would 
> > rephrase it as: measurements of Xi/Omega polarizations, hyperon 
> > polarizations at lower energies mode, ...
> done
> > line 46: highlight --> present,
> done
> > recent new progress of --> recent measurements of
> Done
> > line 48: Suggest remove "towards understanding the QGP properties”
> done
> > line 52: "still the great unsolved mystery," --> why do you think it 
> > is great unsolved mystery?
> Revised. —> unknown.
> > line 58: I would suggest rephrasing:
> > 1) What determines the initial geometry? 2) What are the connection 
> > between initial momentum correlation and hydrodynamics? 3) What are 
> > the roles of nucleon and sub-nucleon fluctuations?
> good suggestions. thank you.
> > line 66: What is meant by "pre-flow" here ?
> reivsed: pre-flow -> pre-equilibrium flow
> > line 68: remove "implementing"
> Done
> > line 69: over-predict the v2, while it can reproduce the v3…
> done
> > line 70: I would rephrase as: Figure 2 presents the measurement of 
> > v3(pT)... and the results are compared to ..
> done
> > line 72: Suggest rephrase: "v3(pT) show resonable agreement in 3He+Au 
> > collisions between STAR and PHENIX.”
> done
> > line 73: Suggest rephrase: However, there is a factor 3-4 discrepancy 
> > between STAR and PHENIX …
> done
> > line 75: Remove "The main indications from”
> done
> > line 76: Remove "Of course”
> done
> > What is meant by "future supplemental task force of the measurements". 
> > I would suggest simply mention "future measurements of ..... could 
> > provide additional constrains and insights on ….”
> done
> > line 82-86: "The correlation between flow harmonics....response with 
> > the flow coefficient" --> Consider rephrasing the sentence, it is too 
> > long.
> done
> > line 87: "the shape and size of the QGP rely on the fluctuations and 
> > the shape" --> Use either ...may rely or can rely on …
> done
> > line 88, 90: Consider rephrasing/breaking this sentence into two.
> one is good. two is too short for both.
> > line 92: I don't get the meaning of "surface is expanded in terms of 
> > spherical harmonics.”.
> reivsed
> > line 93: Check the sentence "supposed to be sensitive to distinguish”
> done
> > line 98: add beam energy
> done
> > line 100: essentially flat --> flat wrt to what ?
> revised. here I mean instead of. missed “of"
> > line 102: Suggest rephrase: Note that Trento with initial state 
> > fluctuations can capture the trend for Au+Au collisions
> Done
> > line 103: add beam energy
> done
> > line 106: Suggest rephrase: The Rho(v3,pT), which is expected to be 
> > fluctuation driven, are almost identical between Au+Au and U+U 
> > collision systems across the whole centrality region
> done
> > line 113: Remove "Additional future ... in the Section …”
> done
> > line 122: "measurements only stop at the mean and variance" --> add 
> > mean and variance of what?
> revised.
> > line 122: "To save the computationally expensive issue" --> To save 
> > the computation
> done
> > line 125: "in detail in Ref.59" --> and detailed in Ref.59
> done
> > line 130: add a reference for "superposition of the independent source 
> > picture”
> Done
> > line 133: define UCC
> revised. use “ultracentral"
> > line 134:  mean and kurtosis of pT fluctuations
> “to” can not be changed to “and"
> > line 137: Longitudinal Flow Decorrelations
> done
> > line 142: a broad range of energy dependence -->  energy dependence of 
> > what?
> Done
> > line 149: define rn(\eta) as the factorization ratio
> Done. add one sentence.
> > line 151: a strong decorrelation at 27 GeV --> do you mean it for r3?
> yes. I revised it to avoid midleading.
> > line 152: remove "collision enery scan”
> remove this? …and … are different meaning. I would like to keep it.
> > 155: "2.5. Collectivity at Fixed-target Program" --> Fixed-target 
> > Program doesn't have Collectivity. You can rephrase Collectivity 
> > measurements at Fixed-target Program
> done.
> > line 158: with higher baryon chemical potential --> at high baryon 
> > density region
> done
> > line 159: "inserting a target into" --> inserting a gold target into
> done
> > line 162: "Figure 7 shows the  first measurements of the beam energy" 
> > --> It is not a first measurement.
> remove first. FXT 4.5 is the first.
> > line 167-171: "Such phenomenon has been observed by the NCQ scaling 
> > from 3 GeV....disappearance of quark scaling in such low energy 
> > collisions." --> Check the sentence, do not seem to be a correct 
> > statement
> revised.
> > line 173: Remove "In the semiperipheral nuclear collisions,". The 
> > following statement is true for other centralities as well.
> done
> > line 175: Right panel of Figure 8 reports
> not right panel. Both.
> > line 178: What is meant by "the opposite direction between”
> the trends of pi+ and pi-  are opposite.
> > line 181: Relativistic heavy-ion collisions can create the strongest
> done
> > line 182-184: "An imbalance between the numbers ... in such strong 
> > interacting ..." --> You should mention under strong B field here
> revised
> > line 194: The details of the observables for CME search can be …
> done
> > line 202: What do you mean by locally vortical fluid?
> removed locally
> > "non-rapidity dependence" --> uniform rapidity dependence
> done
> > line 215: increased vorticity of the system
> done
>
>
> Best Regards
> chunjian
>
>
> > On Mar 14, 2022, at 12:22 AM, subhash <subhash AT rcf.rhic.bnl.gov> 
> > wrote:
> >
> > Dear ChunJian,
> >
> > Thanks for writing this proceedings. The followings are my suggestions 
> > based on this version: 
> > https://drupal.star.bnl.gov/STAR/system/files/ICNFP_Proceeding_CZhang_v1.pdf
> >
> > General comments:
> > I would suggest to get your proceedings proof-read again in your 
> > group.
> > At several places, you used "so-called". I would suggest to remove it.
> > title: An Overview of flow, chirality and vorticity measurements from 
> > STAR experiment
> > line 22: "After the collision, ... hadronic phase composition." --> 
> > Rephrase it. You can try split up the sentence.
> > line 25: "explore fundamental physics." --> I would suggest specifying 
> > which fundamental physics.
> > line 37: "is one of our modern motivations for more than a decade." 
> > --> Remove.
> > line 41: vortical structure of the medium and it's transport 
> > properties
> > line 42: Conside rephrasing the sentence. Remove "Further". I would 
> > rephrase it as: measurements of Xi/Omega polarizations, hyperon 
> > polarizations at lower energies mode, ...
> > line 46: highlight --> present,
> > recent new progress of --> recent measurements of
> > line 48: Suggest remove "towards understanding the QGP properties"
> > line 52: "still the great unsolved mystery," --> why do you think it 
> > is great unsolved mystery?
> > line 58: I would suggest rephrasing:
> > 1) What determines the initial geometry? 2) What are the connection 
> > between initial momentum correlation and hydrodynamics? 3) What are 
> > the roles of nucleon and sub-nucleon fluctuations?
> > line 66: What is meant by "pre-flow" here ?
> > line 68: remove "implementing"
> > line 69: over-predict the v2, while it can reproduce the v3...
> > line 70: I would rephrase as: Figure 2 presents the measurement of 
> > v3(pT)... and the results are compared to ..
> > line 72: Suggest rephrase: "v3(pT) show resonable agreement in 3He+Au 
> > collisions between STAR and PHENIX."
> > line 73: Suggest rephrase: However, there is a factor 3-4 discrepancy 
> > between STAR and PHENIX ...
> > line 75: Remove "The main indications from"
> > line 76: Remove "Of course"
> > What is meant by "future supplemental task force of the measurements". 
> > I would suggest simply mention "future measurements of ..... could 
> > provide additional constrains and insights on ...."
> > line 82-86: "The correlation between flow harmonics....response with 
> > the flow coefficient" --> Consider rephrasing the sentence, it is too 
> > long.
> > line 87: "the shape and size of the QGP rely on the fluctuations and 
> > the shape" --> Use either ...may rely or can rely on ...
> > line 88, 90: Consider rephrasing/breaking this sentence into two.
> > line 92: I don't get the meaning of "surface is expanded in terms of 
> > spherical harmonics.".
> > line 93: Check the sentence "supposed to be sensitive to distinguish"
> > line 98: add beam energy
> > line 100: essentially flat --> flat wrt to what ?
> > line 102: Suggest rephrase: Note that Trento with initial state 
> > fluctuations can capture the trend for Au+Au collisions
> > line 103: add beam energy
> > line 106: Suggest rephrase: The Rho(v3,pT), which is expected to be 
> > fluctuation driven, are almost identical between Au+Au and U+U 
> > collision systems across the whole centrality region
> > line 113: Remove "Additional future ... in the Section ..."
> > line 122: "measurements only stop at the mean and variance" --> add 
> > mean and variance of what?
> > line 122: "To save the computationally expensive issue" --> To save 
> > the computation
> > line 125: "in detail in Ref.59" --> and detailed in Ref.59
> > line 130: add a reference for "superposition of the independent source 
> > picture"
> > line 133: define UCC
> > line 134:  mean and kurtosis of pT fluctuations
> > line 137: Longitudinal Flow Decorrelations
> > line 142: a broad range of energy dependence -->  energy dependence of 
> > what?
> > line 149: define rn(\eta) as the factorization ratio
> > line 151: a strong decorrelation at 27 GeV --> do you mean it for r3?
> > line 152: remove "collision enery scan"
> > 155: "2.5. Collectivity at Fixed-target Program" --> Fixed-target 
> > Program doesn't have Collectivity. You can rephrase Collectivity 
> > measurements at Fixed-target Program
> > line 158: with higher baryon chemical potential --> at high baryon 
> > density region
> > line 159: "inserting a target into" --> inserting a gold target into
> > line 162: "Figure 7 shows the  first measurements of the beam energy" 
> > --> It is not a first measurement.
> > line 167-171: "Such phenomenon has been observed by the NCQ scaling 
> > from 3 GeV....disappearance of quark scaling in such low energy 
> > collisions." --> Check the sentence, do not seem to be a correct 
> > statement
> > line 173: Remove "In the semiperipheral nuclear collisions,". The 
> > following statement is true for other centralities as well.
> > line 175: Right panel of Figure 8 reports
> > line 178: What is meant by "the opposite direction between"
> > line 181: Relativistic heavy-ion collisions can create the strongest
> > line 182-184: "An imbalance between the numbers ... in such strong 
> > interacting ..." --> You should mention under strong B field here
> > line 194: The details of the observables for CME search can be ...
> > line 202: What do you mean by locally vortical fluid?
> > "non-rapidity dependence" --> uniform rapidity dependence
> > line 215: increased vorticity of the system
> >
> > Thanks and regards,
> > Subhash
> >
> >
> >
> >
> >
> >
> >
> >
> > On 2022-02-26 10:32 AM, 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/58541
> > > ---
> > > If you have any problems with the review process, please contact
> > > webmaster AT www.star.bnl.gov
> > > _______________________________________________
> > > Star-fcv-l mailing list
> > > Star-fcv-l AT lists.bnl.gov
> > > https://lists.bnl.gov/mailman/listinfo/star-fcv-l