RT Journal Article
T1 Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations
A1 González, Victor
A1 Basu, Sumit
A1 Marin, Ana
A1 Pan, Jinjin
A1 Ladron de Guevara, Pedro
A1 Pruneau, Claude A.
AB 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.
PB Springer
SN 1434-6044
YR 2021
FD 2021-05-27
LK https://hdl.handle.net/20.500.14352/7271
UL https://hdl.handle.net/20.500.14352/7271
LA eng
NO United States Department of Energy, Office of Nuclear Physics (DOE NP), United States of America
DS Docta Complutense
RD 26 abr 2025