The viscosity to entropy ratio from PHENIX data on single electron production
(2008) In Journal of Physics G: Nuclear and Particle Physics 35.- Abstract
- The PHENIX experiment has measured electrons from the decay of hadrons carrying heavy flavor (charm or bottom quarks) in p + p and Au + Au collisions at at the Relativistic Heavy Ion Collider (RHIC). The strong damping of heavy-flavor motion through the medium is reflected in a substantial suppression at high pT and a large azimuthal anisotropy v2 of such electrons in Au + Au collisions at RHIC. By requiring a simultaneous description of the nuclear modification factor RAA(pT) and the azimuthal anisotropy v2(pT) in transport models, the viscosity to entropy density ratio of the medium can be estimated as η/s (1.3–2)(1/4π), which is close to the conjectured lower quantum bound and, therefore, near a perfect fluid.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1432140
- author
- Averbeck, R. ; Christiansen, Peter LU ; Gustafsson, Hans-Åke LU ; Haslum, Eva LU ; Oskarsson, Anders LU ; Rosendahl, Sarah LU and Stenlund, Evert LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physics G: Nuclear and Particle Physics
- volume
- 35
- article number
- 104115
- publisher
- IOP Publishing
- external identifiers
-
- scopus:54749095094
- ISSN
- 0954-3899
- DOI
- 10.1088/0954-3899/35/10/104115
- language
- English
- LU publication?
- yes
- id
- f100469b-69cd-4359-8883-7c67f57b5549 (old id 1432140)
- date added to LUP
- 2016-04-01 14:01:03
- date last changed
- 2023-03-19 05:25:39
@article{f100469b-69cd-4359-8883-7c67f57b5549, abstract = {{The PHENIX experiment has measured electrons from the decay of hadrons carrying heavy flavor (charm or bottom quarks) in p + p and Au + Au collisions at at the Relativistic Heavy Ion Collider (RHIC). The strong damping of heavy-flavor motion through the medium is reflected in a substantial suppression at high pT and a large azimuthal anisotropy v2 of such electrons in Au + Au collisions at RHIC. By requiring a simultaneous description of the nuclear modification factor RAA(pT) and the azimuthal anisotropy v2(pT) in transport models, the viscosity to entropy density ratio of the medium can be estimated as η/s (1.3–2)(1/4π), which is close to the conjectured lower quantum bound and, therefore, near a perfect fluid.}}, author = {{Averbeck, R. and Christiansen, Peter and Gustafsson, Hans-Åke and Haslum, Eva and Oskarsson, Anders and Rosendahl, Sarah and Stenlund, Evert}}, issn = {{0954-3899}}, language = {{eng}}, publisher = {{IOP Publishing}}, series = {{Journal of Physics G: Nuclear and Particle Physics}}, title = {{The viscosity to entropy ratio from PHENIX data on single electron production}}, url = {{http://dx.doi.org/10.1088/0954-3899/35/10/104115}}, doi = {{10.1088/0954-3899/35/10/104115}}, volume = {{35}}, year = {{2008}}, }