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

Adam, Jaroslav

doi:10.1103/PhysRevC.98.014910

Title: Global polarization of Λ hyperons in Au+Au collisions at √^S_NN = 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 √^S_NN = 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 √^S_NN = 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:

Adam, Jaroslav ^[1]

Creighton Univ., Omaha, NE (United States). et al.

Publication Date:: 2018-07-23

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.

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                    Adam, Jaroslav. Global polarization of Λ hyperons in Au+Au collisions at √SNN = 200 GeV.  United States.  https://doi.org/10.1103/PhysRevC.98.014910

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                    Adam, Jaroslav. Mon .  
"Global polarization of Λ hyperons in Au+Au collisions at √SNN = 200 GeV".  United States.  https://doi.org/10.1103/PhysRevC.98.014910.  https://www.osti.gov/servlets/purl/1438431.

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@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}

}

Copy to clipboard

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Midrapidity Λ and Λ¯¯ production in Au + Au collisions at √(^sNN) = 130 GeV

Journal Article Adler, C. ; Ahammed, Z. ; Allgower, C. ; ... - Physical Review Letters

We report the first measurement of strange (Λ) and antistrange (Λ¯¯¯) baryon production from √(^sNN)=130 GeV Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC). Rapidity density and transverse mass distributions at midrapidity are presented as a function of centrality. The yield of Λ and Λ¯¯¯ hyperons is found to be approximately proportional to the number of negative hadrons. The production of Λ¯¯¯ hyperons relative to negative hadrons increases very rapidly with transverse momentum. The magnitude of the increase cannot be described by existing hadronic string fragmentation models alone.
https://doi.org/10.1103/PhysRevLett.89.092301

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

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Citation Formats

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

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

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

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

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

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

The RHIC zero degree calorimeters journal, September 2001

Review of Particle Physics text, January 2008

Beam-energy dependence of the directed flow of protons, antiprotons, and pions in au+au collisions text, January 2014

Review of Particle Physics text, January 2018

Review of Particle Physics text, January 2012

Global polarization measurement in Au+Au collisions text, January 2007

Angular momentum conservation in heavy ion collisions at very high energy text, January 2007

Directed flow in ultrarelativistic heavy-ion collisions text, January 2010

Event-by-event anisotropic flow in heavy-ion collisions from combined Yang-Mills and viscous fluid dynamics text, January 2012

Collective flow and viscosity in relativistic heavy-ion collisions text, January 2013

The STAR Vertex Position Detector text, January 2014

Vorticity in Heavy-Ion Collisions text, January 2016

Azimuthal Dependence of Pion Interferometry at the AGS text, January 2000

The RHIC Zero Degree Calorimeter text, January 2000

Analysis of directed flow from elliptic flow text, January 2002

Globally Polarized Quark-gluon Plasma in Non-central A+A Collisions text, January 2004

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

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

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

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

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

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

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 $\sqrt{s_{NN}} = 200$ 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 $\sqrt{s_{NN}} = 7.7$ –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 $\sqrt{s_{NN}} = 62.4$ 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

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 $\sqrt{s_{N N}} = 7.7$ –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 $\sqrt{s_{NN}} = 7.7 - 200$ 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

The RHIC zero degree calorimeters
journal, September 2001

Review of Particle Physics
text, January 2008

Beam-energy dependence of the directed flow of protons, antiprotons, and pions in au+au collisions
text, January 2014

Review of Particle Physics
text, January 2018

Review of Particle Physics
text, January 2012

Global polarization measurement in Au+Au collisions
text, January 2007

Angular momentum conservation in heavy ion collisions at very high energy
text, January 2007

Directed flow in ultrarelativistic heavy-ion collisions
text, January 2010

Event-by-event anisotropic flow in heavy-ion collisions from combined Yang-Mills and viscous fluid dynamics
text, January 2012

Collective flow and viscosity in relativistic heavy-ion collisions
text, January 2013

The STAR Vertex Position Detector
text, January 2014

Vorticity in Heavy-Ion Collisions
text, January 2016

Azimuthal Dependence of Pion Interferometry at the AGS
text, January 2000

The RHIC Zero Degree Calorimeter
text, January 2000

Analysis of directed flow from elliptic flow
text, January 2002

Globally Polarized Quark-gluon Plasma in Non-central A+A Collisions
text, January 2004

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 $\bar{Λ}$ 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

Latest Results from RHIC + Progress on Determining q ^ L in RHI Collisions Using Di-Hadron Correlations
journal, June 2019

Chiral magnetic effect and an experimental bound on the late time magnetic field strength
text, January 2018

Applied Holography of the AdS$_5$-Kerr Spacetime
text, January 2018

Holography of Low-Centrality Heavy Ion Collisions
text, January 2018