STAR Flow, Chirality and Vorticity PWG

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Dear star-fcv-l AT lists.bnl.gov members,

Prithwish Tribedy ( ptribedy AT bnl.gov ) has commented on a material originally 
 
submitted by Xionghong He ( hexh AT impcas.ac.cn ) at
https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2023/Light-and-Hyper-Nuclei-Collectivity-AuAu-Collisions-RHIC

Comment:
Very nice abstract. Please find my comments below:

The first sentence in a bit complex, how about the following revision:

"Studying light- and hyper-nuclei production and collectivity will shed light 
 
on their formation mechanism as well as the hyperon-nucleon interactions  
under finite pressure, especially in high-energy nuclear collisions at high  
baryon density regions."
-->
"Studying the production and collectivity of light and hyper-nuclei in  
high-energy nuclear collisions at high baryon density regions can help us  
understand how they form and how hyperons interact with nucleons under finite 
 
pressure."

Revise the first two sentence of the second para as:

"In this talk, we will present the first results of directed flow $v_1$ on  
the energy dependence of light- and hyper-nuclei (p, d, $^3$He, and  
$\Lambda$, $^3_\Lambda$H, $^4_\Lambda$H) from mid-central Au+Au collisions at 
 
$\sqrt{s_{_{NN}}}$ = 3.0, 3.2, 3.5, and 3.9 GeV. New results on elliptic flow 
 
$v_2$ for light nuclei will also be reported."
-->
"In this talk, we will present the first results on the energy dependence of  
the directed flow $v_1$ of light and hyper-nuclei (p, d, $^3$He, and  
$\Lambda$, $^3_\Lambda$H, $^4_\Lambda$H) in mid-central Au+Au collisions at  
$\sqrt{s_{_{NN}}}$ = 3.0, 3.2, 3.5, and 3.9 GeV, along with new results on  
$v_2$ elliptic flow for light nuclei."

"the RHIC beam energy scan program." --> "the second phase of the RHIC beam  
energy scan program"

"Both the collision energy and mass dependence of the anisotropic flow, the  
mid-rapidity slope $dv_1/dy|_{y~0}$, for hyper-nuclei are found to be similar 
 
to that of light-nuclei, implying a similar production mechanism."
-->
"The anisotropic flow of hypernuclei shows a similar collision energy and  
mass dependence to light nuclei, as seen in the slope of $v_1$ at  
mid-rapidity $dv_1/dy|_{y=0}$. This suggests that the two types of nuclei are 
 
formed in a similar way."

"The v1 slopes decrease with increasing energy, and a stronger energy  
dependence is observed for heavier mass nuclei."
-->
"We observe that the slope $dv_1/dy|_{y=0}$ decreases with increasing energy, 
 
with a stronger energy dependence for heavier nuclei"

"Regarding v2, the elliptic flow of light nuclei, out-of-plane expansion (v2  
< 0) is observed at the lowest collision energy, while in-plane expansions  
(v2 > 0) are evident."
-->
"For light nuclei, the elliptic flow results indicate an out-of-plane  
expansion ($v_2 < 0$) at the lowest collision energy, whereas in-plane  
expansions ($v_2 > 0$) are evident at all other collision energies."

Change the last line to :
"We will discuss these new results within the framework of the hadronic  
transport model in combination with coalescence after-burner calculations."





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