STAR Flow, Chirality and Vorticity PWG

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

Dear Xingrui,

Nice proceedings. I have a few suggestions below for your consideration:

It would be good if you can add line numbers in the next iteration.
Please check for typos using latex command.

Abstract:
---------------------------------
"In this proceeding," --> In these proceedinga,
"This measurements" --> These measurements

2 Global polarization results:
---------------------------------
"The significance of splitting between Λ and Λ¯ global polarization is 
not obvious due to the magnetic field effects in the beam energy scan I 
(BES-I) program."
--> The significance of splitting between Λ and Λ¯ global polarization, 
expected from the magnetic field, is not obvious from the data collected 
in the beam energy scan I (BES-I) program.

"acquired 10 times statistics data sets at..." --> acquired about 10 
times statistics at .. GeV datasets than that of BES-I.

"The splitting integrated over 20-50% centrality as a function of 
collision energy in Au+Au collisions, results show no statistically 
significant PΛ¯ − PΛ"
--> The polarization splitting (PΛ¯ − PΛ), integrated over 20-50% 
centrality, is not statistically significant for Au+Au collisions at 
19.6 and 27 GeV from BES-II.

"The trend of the results" --> The polarization results or simply the 
results ...  from central to peripheral collisions.

"For better precision," --> In order to achieve a better precision in 
polarization splitting,

"which indicates that no magnetic field effects on the hyperon 
polarization is observed in isobar collisions within current statistical 
limitation"
--> suggest to start a new line:
It indicates that there is no magnetic field driven effects on the 
hyperon polarization with present statistical precision.


"indicating there might be little collision system size dependence."
--> indicating there no obvious collision system size dependence.

"The hydrodynamic model calculation from Λ polarization scarion and S 
-quark polarization scarion both consistent with the experiment
data." --> Add a reference;
"S-quark" --> s-quark


3 Local polarization results
---------------------------------
"Figure 3 shows ⟨cosθ∗p⟩ " --> you could define \theta_p^star

"The signal on figure 3 (left) shows a clear sine modulation,"
--> The left panel in figure 3 shows a clear sine modulation in 
polarization signal,

"The trend is similar to that in Au+Au collisions and signal is more 
significant."
--> The pattern in isobar collisions is similar to that in Au+Au with 
better statistical significance. (check if this is what you mean)

"v3 driven polarization" --> triangular flow driven polarization

"Figure 4 (a) presents the centrality dependence of the second and third 
Fourier sine coefficients of the local polarizaiton. "
--> Figure 4 (a) presents the comparison of centrality dependence local 
polarization with respect to second and third Fourier sine coefficients.

"The increase of the results with centrality is in line with the 
increasing of elliptic flow magnitude towards peripheral collisions. A 
significant local
polarization with respect to the third-order event plane has been 
observed which increases with centrality.  The results show no 
significant difference between the second-order and third-order local 
polarization within uncertrainties."
--> The results from second order is consistent with expected increase 
in elliptic flow magnitude towards peripheral collisions. The results 
from third order also increases from central to peripheral collisions. 
However, there is no significant difference between the second-order and 
third-order local polarization within present uncertainties.

"has been observed comparing isobar and Au+Au collisions..."
--> has been observed when comparing isobar and Au+Au collisions ...

Figure 5 --> correct the typos in caption

"Figure 5 shows the first study of Spin Hall Effect(SHE) in Au+Au 
collisions atat √sNN = 19.6, 27 GeV (BES-II). A hint of negative signal 
observed but the significance is not enough. The hadrodynamics model 
also give an prediction of the SHE as a function of collision energies 
with different polarization scenario[5]. SHE study at more collision 
energies is under the way."

--> Figure 5 presents the net local polarization of Λ and Λ¯, an 
observable designed to probe the baryonic Spin Hall effect (SHE), in 
Au+Au collisions at √sNN = 19.6 and 27 GeV (BES-II). The negative sign 
of net polarization does not support a scenario of SHE at the measured 
energies. However, measurements at lower energies, where SHE signal is 
anticipated, are currently in progress.






4 Summary
---------------------------------
19.6, 27 GeV --> 19.6 and 27 GeV

"For global polarization, Λ and Λ¯ results are consistent, showing"
--> The global polarization of Λ and Λ¯ are consistent within current 
statistical precision, indicating ....

"Global polarization results are consistent between Ru+Ru, Zr+Zr, and 
Au+Au collisions. No obvious collision system size dependence is 
observed."
--> The global polarization is consistent across different collision 
system sizes Ru+Ru, Zr+Zr, and Au+Au at same beam energy.

"Hint of negative net local polarization has been observed in Au+Au 
collisions at √sNN = 19.6, 27 GeV"
--> An observable of net local polarization, designed to probe

"study at more beam energies is underway."
--> Global and local polarization studies at other BES-II energies are 
underway.

Thanks and regards,
Subhash


On 2023-11-23 11:02 AM, webmaster--- via Star-fcv-l wrote:
> Dear star-fcv-l AT lists.bnl.gov members,
>
> Xingrui Gou (Gouxr AT sdu.edu.cn) has submitted a material for a review, 
> please
> have a look:
> https://drupal.star.bnl.gov/STAR/node/66061
>
> ---
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