Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations
Abstract The specific shear viscosity, $$\eta /s$$ η / s , of the quark-gluon plasma formed in ultrarelativistic heavy-ion collisions at RHIC and LHC is estimated based on the progressive longitudinal broadening of transverse momentum two-particle correlators, $$G_2$$ G 2 , reported as a function of...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-05-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-09260-z |
| _version_ | 1818724915830849536 |
|---|---|
| author | Victor Gonzalez Sumit Basu Ana Marin Jinjin Pan Pedro Ladron de Guevara Claude A. Pruneau |
| author_facet | Victor Gonzalez Sumit Basu Ana Marin Jinjin Pan Pedro Ladron de Guevara Claude A. Pruneau |
| author_sort | Victor Gonzalez |
| collection | DOAJ |
| description | Abstract The specific shear viscosity, $$\eta /s$$ η / s , of the quark-gluon plasma formed in ultrarelativistic heavy-ion collisions at RHIC and LHC is estimated based on the progressive longitudinal broadening of transverse momentum two-particle correlators, $$G_2$$ G 2 , reported as a function of collision centrality by the STAR and ALICE experiments. Estimates are computed as a function of collision centrality using the Gavin ansatz which relates the $$G_2$$ G 2 longitudinal broadening to the specific shear viscosity. Freeze out times required for the use of the ansatz are computed using a linear fit of freeze out times reported as a function of the cubic root of the charged particle pseudorapidity density ( $${\mathrm{d}}N_{\mathrm{ch}}$$ d N ch /d $$\eta )^{1/3}$$ η ) 1 / 3 . Estimates of $$\eta /s$$ η / s based on ALICE data exhibit little to no dependence on collision centrality at LHC energy, while estimates obtained from STAR data hint that $$\eta /s$$ η / s might be a function of collision centrality at top RHIC energy. |
| first_indexed | 2024-12-17T21:34:00Z |
| format | Article |
| id | doaj.art-0d76664ccd234bd997626ab417aa5d08 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-17T21:34:00Z |
| publishDate | 2021-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-0d76664ccd234bd997626ab417aa5d082022-12-21T21:31:47ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-05-0181511010.1140/epjc/s10052-021-09260-zExtraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlationsVictor Gonzalez0Sumit Basu1Ana Marin2Jinjin Pan3Pedro Ladron de Guevara4Claude A. Pruneau5Department of Physics and Astronomy, Wayne State UniversityDivision of Particle Physics, Department of Physics, Lund UniversityResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für SchwerionenforschungCyclotron Institute, Texas A&M UniversityUniversidad Complutense de MadridDepartment of Physics and Astronomy, Wayne State UniversityAbstract The specific shear viscosity, $$\eta /s$$ η / s , of the quark-gluon plasma formed in ultrarelativistic heavy-ion collisions at RHIC and LHC is estimated based on the progressive longitudinal broadening of transverse momentum two-particle correlators, $$G_2$$ G 2 , reported as a function of collision centrality by the STAR and ALICE experiments. Estimates are computed as a function of collision centrality using the Gavin ansatz which relates the $$G_2$$ G 2 longitudinal broadening to the specific shear viscosity. Freeze out times required for the use of the ansatz are computed using a linear fit of freeze out times reported as a function of the cubic root of the charged particle pseudorapidity density ( $${\mathrm{d}}N_{\mathrm{ch}}$$ d N ch /d $$\eta )^{1/3}$$ η ) 1 / 3 . Estimates of $$\eta /s$$ η / s based on ALICE data exhibit little to no dependence on collision centrality at LHC energy, while estimates obtained from STAR data hint that $$\eta /s$$ η / s might be a function of collision centrality at top RHIC energy.https://doi.org/10.1140/epjc/s10052-021-09260-z |
| spellingShingle | Victor Gonzalez Sumit Basu Ana Marin Jinjin Pan Pedro Ladron de Guevara Claude A. Pruneau Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations European Physical Journal C: Particles and Fields |
| title | Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations |
| title_full | Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations |
| title_fullStr | Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations |
| title_full_unstemmed | Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations |
| title_short | Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations |
| title_sort | extraction of the specific shear viscosity of quark gluon plasma from two particle transverse momentum correlations |
| url | https://doi.org/10.1140/epjc/s10052-021-09260-z |
| work_keys_str_mv | AT victorgonzalez extractionofthespecificshearviscosityofquarkgluonplasmafromtwoparticletransversemomentumcorrelations AT sumitbasu extractionofthespecificshearviscosityofquarkgluonplasmafromtwoparticletransversemomentumcorrelations AT anamarin extractionofthespecificshearviscosityofquarkgluonplasmafromtwoparticletransversemomentumcorrelations AT jinjinpan extractionofthespecificshearviscosityofquarkgluonplasmafromtwoparticletransversemomentumcorrelations AT pedroladrondeguevara extractionofthespecificshearviscosityofquarkgluonplasmafromtwoparticletransversemomentumcorrelations AT claudeapruneau extractionofthespecificshearviscosityofquarkgluonplasmafromtwoparticletransversemomentumcorrelations |