2026-06-27T16:26:37Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/72712023-07-17T22:31:43Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
González, Victor
author
Basu, Sumit
author
Marin, Ana
author
Pan, Jinjin
author
Ladron de Guevara, Pedro
author
Pruneau, Claude A.
2023-06-17T08:29:24Z
2023-06-17T08:29:24Z
2021-05-27
1434-6044
10.1140/epjc/s10052-021-09260-z
https://hdl.handle.net/20.500.14352/7271
https://doi.org/10.1140/epjc%2Fs10052-021-09260-z
The specific shear viscosity, 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, G2, 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 G2 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 (dNch/dη)1/3. Estimates of 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 η/s might be a function of collision centrality at top RHIC energy.
eng
Atribución 3.0 España
Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations
journal article
URL
https://docta.ucm.es/bitstreams/9604912e-398d-4c4c-a440-e824a1869f63/download
File
MD5
31a4ebc0ef4588cf288414fa5cc69508
740362
application/pdf
s10052-021-09260-z.pdf