STAR Flow, Chirality and Vorticity PWG

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

Dear CWR,

Nice abstract. I have a few suggestions for your consideration:

"In heavy ion collisions that are not exactly head-on, a large Orbital 
Angular Momentum (OAM) is produced that can affect the polarization of 
the quarks inside the quark-gluon plasma."
-->
In non-central heavy ion collisions, a large Orbital Angular Momentum 
(OAM) is produced.

"This polarization influences the production of vector mesons and can 
cause global spin alignment." --> A part of OAM can induce polarization 
of the quarks and anti-quarks, hence the vector mesons, inside the 
medium.

l#10-11: from the first phase of the RHIC Beam Energy Scan (BES-I) Au+Au 
collisions.
Suggest to remove: "and found energy dependence."

"The analysis method employed resonance yield in the angle (θ∗) between 
the decay daughter’s momentum and the OAM and relied on acceptance and 
efficiency corrections that are also dependent of θ∗."
-->
The global spin alignment, quantified by the 00th coefficient of the 
spin density matrix rho_00, is measured by a fit to the acceptance and 
efficiency corrected \phi meson yield versus polar angle (\theta*) 
between the daughter kaon in parent's rest frame and OAM direction.

"In this poster, we present an alternative method to extract the spin 
alignment without analyzing the yield vs. θ∗, but the ⟨cos2θ∗⟩ as a 
function of pair invariant mass."
-->
In this poster, we present an alternative approach to extract the 
\rho_00 by utilizing ⟨cos2 θ∗⟩ distribution as a function of 
pair-invariant mass instead of analyzing the \phi meson yields in cos θ∗ 
bins.

I would suggest to be conservative and suggest to remove the last part, 
ie, "We report preliminary results for this method and discuss our 
results in the context of the energy dependence previously measured by 
STAR." Instead you can simply mention we will compare measurements using 
both these methods.

Thanks and regards,
Subhash

On 2023-04-22 04:16 AM, webmaster--- via Star-fcv-l wrote:
> Dear star-fcv-l AT lists.bnl.gov members,
>
> Charles Robertson (rober558 AT purdue.edu) has submitted a material for a
> review, please have a look:
> https://drupal.star.bnl.gov/STAR/node/63531
>
> Deadline: 2023-05-01
> ---
> 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