Xi:
Egor Alpatov:
https://drupal.star.bnl.gov/STAR/system/files/Global_Polarization_22_07_2020.pdf
https://drupal.star.bnl.gov/STAR/system/files/Meeting_05_08_2020_0.pdf
https://drupal.star.bnl.gov/STAR/system/files/STAR_Meeting_17_09_Egor_0.pdf
https://drupal.star.bnl.gov/STAR/system/files/FCV_Alpatov_30Sep.pdf
https://drupal.star.bnl.gov/STAR/system/files/Hyperon%20global%20polarization%202021_0.pdf
https://drupal.star.bnl.gov/STAR/system/files/Hyperon%20global%20polarization%202021_2.pdf
https://drupal.star.bnl.gov/STAR/system/files/GlPol_14p6_FCV_dec.pdf
https://drupal.star.bnl.gov/STAR/system/files/Global%20%CE%9B%20and%20%CE%9E%20polarization.pdf
https://drupal.star.bnl.gov/STAR/system/files/Global%20%CE%9E%20polarization%202023.pdf
https://drupal.star.bnl.gov/STAR/system/files/Update%20on%20GlobPol%20fcv%2013%20March.pdf
https://drupal.star.bnl.gov/STAR/blog/alpatov/Proposal-and-Update-Global-Polarization-Xi
https://drupal.star.bnl.gov/STAR/blog/alpatov/kfparticle-and-helix
Paper proposal: Global polarization of Xi hyperons at sqrt(s_NN)=14.6, 19.6 and 27 GeV in Au+Au collisions:
https://drupal.star.bnl.gov/STAR/blog/alpatov/Paper-proposal-Global-polarization-Xi-hyperons-sqrtsNN146-196-and-27-GeV-AuAu-collisi-0
Xingrui Gou:
https://drupal.star.bnl.gov/STAR/system/files/Merasutemnt%20Xi%20global%20polarization%20in%20AuAu%207.7%2C%209.2%2C%2011.5%2C%2014.5%2017.3GeV.pdf
https://drupal.star.bnl.gov/STAR/system/files/20240620_Update%20Merasutemnt%20Xi%20global%20polarization%20in%20AuAu%207.7%2C%209.2%2C%2011.5%2C%2014.5%2017.3GeV_0.pdf
https://drupal.star.bnl.gov/STAR/system/files/20240705_Update%20measurement%20Xi%20global%20polarization%20in%20AuAu%207.7%2C%209.2%2C%2011.5%2C%2014.5%2017.3GeV.pdf
https://drupal.star.bnl.gov/STAR/blog/xgou/Update-Xi-global-polarization-centrality-pt-and-y-dependence-and-Omega-polarization-AuAu-B
https://drupal.star.bnl.gov/STAR/blog/xgou/Slides-Paper-Proposal-Xi-and-Omega-global-polarization-request-AuAu-collisions-BES-II
https://drupal.star.bnl.gov/STAR/system/files/20240717_Update%20Measurement%20Xi%20global%20polarization%20in%20AuAu%207.7%2C%209.2%2C%2011.5%2C%2014.5%2017.3GeV.pdf
https://drupal.star.bnl.gov/STAR/system/files/20240717_Measurement%20Omega%20global%20polarization%20in%20AuAu%207.7%2C%209.2%2C%2011.5%2C%2014.5%2017.3GeV_0.pdf

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Short paper

Title: Global polarization of Lambda, Xi and Omega hyperons in Au+Au collisions from the RHIC Beam Energy Scan-II

Target Journal: PRL 

Abstract:
  The observation of global polarization along the system’s angular momentum has revealed the existence of large vorticities in the medium created in heavy ion collisions. The weak decays of hyperons provide an opportunity to measure this phenomenon. A splitting between Λ and ഥ Λglobal polarization could originate from the strong magnetic field in the late stage of the collision evolution, different freeze-out parameters, etc. The global polarization of multistrange hyperons, such as Ξ and Ω, can provide new insights into the hydrodynamic description of the system and its vorticity structure. In this paper, we present the global polarization of Λ, Ξ, and Ω in Au+Au collisions from the high statistics RHIC Beam Energy Scan II data.
  High-precision values for Λ and Λ^- global polarization are measured at sqrt{S_NN} = 7.7−27GeV. No splitting between Λ and Λ^- global polarization is observed. For the first time, the energy dependence of Ξ and Ω hyperon global polarization is measured. Ξ and Ω hyperon global polarization increases with collision energy decrease. Hyperon global polarization parameter for Λ, Ξ, and Ω are compared to each other and the AMPT and UrQMD+vHLLE models.

Fig.2: Global polarization of Ξ^-+Ξ ̅^+ hyperons as a function of collision energies in Au+Au collisions at√(s_NN )= 7.7, 9.2, 11.5, 14.6, 17.3, 19.6, 27 GeV.

Figure 3:

Fig.3 : Global polarization of Ω^-+Ω ̅^+ hyperons as a function of collision energies in Au+Au collisions at√(s_NN )= 7.7, 9.2, 11.5, 14.6, 17.3, 19.6, 27 GeV.

2.  High-precision values for Λ and Λ^- global polarization are measured at sqrt{S_NN} = 7.7−27GeV. P_H of Λ, Ξ, and Ω are consistent within uncertainties. 
3.  P_Λ^- − P_Λ measured at sqrt{S_NN} = 7.7, 9.2, 11.5, 14.6, 17.3 GeV with no significant difference between particles and antiparticles observed

Long paper:

Title: Measurements of global polarization of Lambda, Xi and Omega hyperons in Au+Au collisions from the RHIC Beam Energy Scan-II

Target Journal: PRC 

Abstract:

The observation of global polarization along the system’s angular momentum has revealed the existence of large vorticities in the medium created by heavy-ion collisions. The global polarization of multi-strange hyperons can offer new insights into the hydrodynamic description of the system and its vorticity structure. In this paper, we present the global polarization of Λ and Ξ as a function of centrality, transverse momentum, and rapidity in Au+Au collisions from the RHIC Beam Energy Scan Phase II. We observe an indication of rapidity dependence in the global polarization of Λ at low collision energies. No significant dependence of Ξ on rapidity or transverse momentum was found. We also present the polarization of  Ω hyperons versus centrality. These results provide new insights into the polarization mechanism and vorticity fields in heavy-ion collisions, as well as additional constraints on the properties and dynamics of the matter created in the collisions.

Fig.1 : Global polarization (P_H) measurements are presented as a function of collision centrality at √sNN = 7.7, 9.2, 11.5, 14.6, and 17.3 GeV. The statistical uncertainties are displayed as lines, while the systematic uncertainties are shown as open boxes.

Figure 2: