skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Global polarization of Λ hyperons in Au+Au collisions at √SNN = 200 GeV

Abstract

Global polarization of Λ hyperons has been measured to be of the order of a few tenths of a percent in Au+Au collisions at √SNN = 200 GeV, with no significant difference between Λ and Λ¯. These new results reveal the collision energy dependence of the global polarization together with the results previously observed √SNN = 7.7 – 62.4 GeV and indicate noticeable vorticity of the medium created in non-central heavy-ion collisions at the highest RHIC collision energy.

Authors:
 [1]
  1. Creighton Univ., Omaha, NE (United States). et al.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Org.:
STAR Collaboration
OSTI Identifier:
1438431
Alternate Identifier(s):
OSTI ID: 1461230
Report Number(s):
BNL-205687-2018-JAAM
Journal ID: ISSN 2469-9985; TRN: US1900440
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 98; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Adam, Jaroslav. Global polarization of Λ hyperons in Au+Au collisions at √SNN = 200 GeV. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.98.014910.
Adam, Jaroslav. Global polarization of Λ hyperons in Au+Au collisions at √SNN = 200 GeV. United States. doi:https://doi.org/10.1103/PhysRevC.98.014910
Adam, Jaroslav. Mon . "Global polarization of Λ hyperons in Au+Au collisions at √SNN = 200 GeV". United States. doi:https://doi.org/10.1103/PhysRevC.98.014910. https://www.osti.gov/servlets/purl/1438431.
@article{osti_1438431,
title = {Global polarization of Λ hyperons in Au+Au collisions at √SNN = 200 GeV},
author = {Adam, Jaroslav},
abstractNote = {Global polarization of Λ hyperons has been measured to be of the order of a few tenths of a percent in Au+Au collisions at √SNN = 200 GeV, with no significant difference between Λ and Λ¯. These new results reveal the collision energy dependence of the global polarization together with the results previously observed √SNN = 7.7 – 62.4 GeV and indicate noticeable vorticity of the medium created in non-central heavy-ion collisions at the highest RHIC collision energy.},
doi = {10.1103/PhysRevC.98.014910},
journal = {Physical Review C},
number = ,
volume = 98,
place = {United States},
year = {2018},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Multigap RPCs in the STAR experiment at RHIC
journal, January 2012

  • Llope, W. J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 661
  • DOI: 10.1016/j.nima.2010.07.086

Ultrarelativistic nuclear collisions: Direction of spectator flow
journal, August 2016


Chiral magnetic and vortical effects in high-energy nuclear collisions—A status report
journal, May 2016


Review of Particle Physics
journal, October 2016


Study of $$\Lambda $$ Λ polarization in relativistic nuclear collisions at $$\sqrt{s_\mathrm {NN}}=7.7$$ s NN = 7.7 –200 GeV
journal, April 2017


STAR detector overview
journal, March 2003

  • Ackermann, K. H.; Adams, N.; Adler, C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
  • DOI: 10.1016/S0168-9002(02)01960-5

The STAR time projection chamber: a unique tool for studying high multiplicity events at RHIC
journal, March 2003

  • Anderson, M.; Berkovitz, J.; Betts, W.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
  • DOI: 10.1016/S0168-9002(02)01964-2

A study of vorticity formation in high energy nuclear collisions
journal, September 2015


Directed flow in ultrarelativistic heavy-ion collisions
journal, May 2010


Collective Flow and Viscosity in Relativistic Heavy-Ion Collisions
journal, October 2013


Analysis of directed flow from elliptic flow
journal, July 2002


The STAR Vertex Position Detector
journal, September 2014

  • Llope, W. J.; Zhou, J.; Nussbaum, T.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 759
  • DOI: 10.1016/j.nima.2014.04.080

Globally Polarized Quark-Gluon Plasma in Noncentral A + A Collisions
journal, March 2005


Spin alignment measurements of the K * 0 ( 892 ) and ϕ ( 1020 ) vector mesons in heavy ion collisions at s NN = 200 GeV
journal, June 2008


Azimuthal dependence of pion interferometry at the AGS
journal, December 2000


Collective Longitudinal Polarization in Relativistic Heavy-Ion Collisions at Very High Energy
journal, January 2018


Global polarization measurement in Au+Au collisions
journal, August 2007


Event-by-Event Anisotropic Flow in Heavy-ion Collisions from Combined Yang-Mills and Viscous Fluid Dynamics
journal, January 2013


Erratum: Globally Polarized Quark-Gluon Plasma in Noncentral A + A Collisions [Phys. Rev. Lett. 94 , 102301 (2005)]
journal, January 2006


Elliptic flow of identified hadrons in Au+Au collisions at s NN = 7.7 –62.4 GeV
journal, July 2013


Hyperon polarization in heavy-ion collisions and holographic gravitational anomaly
journal, April 2018


Erratum: Global polarization measurement in Au + Au collisions [Phys. Rev. C 76 , 024915 (2007)]
journal, March 2017


Λ hyperon polarization in relativistic heavy ion collisions from a chiral kinetic approach
journal, August 2017


Third flow component as QGP signal
journal, July 1999


Polarization of massive fermions in a vortical fluid
journal, August 2016


Directed flow in Au+Au collisions at s NN = 62.4 GeV
journal, March 2006


Antiflow of nucleons at the softest point of the equation of state
journal, January 2000


Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions
journal, April 2014


Global Λ polarization in heavy-ion collisions from a transport model
journal, November 2017


The STAR Heavy Flavor Tracker (HFT): focus on the MAPS based PXL detector
journal, April 2016


System-Size Independence of Directed Flow Measured at the BNL Relativistic Heavy-Ion Collider
journal, December 2008


Methods for analyzing anisotropic flow in relativistic nuclear collisions
journal, September 1998


The RHIC zero-degree calorimeters
journal, April 2001

  • Adler, C.; Denisov, A.; Garcia, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 461, Issue 1-3
  • DOI: 10.1016/S0168-9002(00)01238-9

Global Λ polarization in high energy collisions
journal, March 2017


Vorticity in heavy-ion collisions
journal, June 2016


Global hyperon polarization at local thermodynamic equilibrium with vorticity, magnetic field, and feed-down
journal, May 2017


Inclusive charged hadron elliptic flow in Au + Au collisions at s N N = 7.7 –39 GeV
journal, November 2012


Erratum: Rotating quark-gluon plasma in relativistic heavy-ion collisions [Phys. Rev. C 94 , 044910 (2016)]
journal, April 2017


Vorticity and particle polarization in heavy ion collisions (experimental perspective)
journal, January 2018


Azimuthally sensitive correlations in nucleus-nucleus collisions
journal, December 2004


Rotating quark-gluon plasma in relativistic heavy-ion collisions
journal, October 2016


Estimation of the shear viscosity at finite net-baryon density from A + A collision data at s NN = 7.7 200 GeV
journal, June 2015


Angular momentum conservation in heavy ion collisions at very high energy
journal, February 2008


The RHIC zero-degree calorimeters
journal, March 2003

  • Adler, C.; Denisov, A.; Garcia, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
  • DOI: 10.1016/j.nima.2003.08.112

    Works referencing / citing this record:

    Feed-down effect on Λ spin polarization
    journal, July 2019


    Longitudinal spin polarization in a thermal model
    journal, November 2019


    Microscopic description for polarization in particle scattering
    journal, December 2019


    Relaxation time for strange quark spin in rotating quark-gluon plasma
    journal, February 2020


    Probing vorticity structure in heavy-ion collisions by local Λ polarization
    journal, August 2018


    Azimuthal angle dependence of the longitudinal spin polarization in relativistic heavy ion collisions
    journal, January 2019


    Thermal vorticity and spin polarization in heavy-ion collisions
    journal, January 2019


    Λ and Λ ¯ spin interaction with meson fields generated by the baryon current in high energy nuclear collisions
    journal, February 2019


    Relativistic quantum kinetic theory for massive fermions and spin effects
    journal, September 2019


    Axial kinetic theory and spin transport for fermions with arbitrary mass
    journal, November 2019


    Chiral magnetic effect and an experimental bound on the late time magnetic field strength
    journal, October 2018


    Local spin polarization in high energy heavy ion collisions
    journal, October 2019


    Applied holography of the AdS 5 –Kerr space–time
    journal, August 2019


    Holography of low-centrality heavy ion collisions
    journal, October 2019


    Polarized Baryon Production in Heavy Ion Collisions: An Analytic Hydrodynamical Study
    journal, May 2019