Journal articles
Azimuthal anisotropy of π0 and η mesons in Au + Au collisions at sNN−−−√=200 GeV
A. Adare
H. Pereira
1
C. Silvestre
1
D. Jouan
2
E. T. Atomssa
3
O. Drapier
3
F. Fleuret
3
M. Gonin
3
R. Granier de Cassagnac
3
A. Rakotozafindrabe
1
G. Roche
4
P. Rosnet
4
R. Granier de Cassagnac 3
Author IdHAL : raphgrandecass arXiv : https://arxiv.org/a/rgdc ORCID : https://orcid.org/0000-0002-1275-7292
A. Rakotozafindrabe 1
Author
G. Roche 4
Author
P. Rosnet 4
Author
1
IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (CEA Saclay
F-91191 Gif sur Yvette cedex - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRFU (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
2
IPNO - Institut de Physique Nucléaire d'Orsay (IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR8608 (France)
3
LLR - Laboratoire Leprince-Ringuet (Route de Saclay - 91128 Palaiseau Cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- X - École polytechnique (École polytechnique, 91128 Palaiseau Cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7638 (France)
4
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand (Campus des Cézeaux / 24 avenue des Landais / BP 80026 / 63171 Aubière Cedex - France)
- UBP - Université Blaise Pascal - Clermont-Ferrand 2 (34, avenue Carnot - BP 185 / 63006 Clermont-Ferrand cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6533 (France)
Abstract : The azimuthal anisotropy coefficients v2 and v4 of π0 and η mesons are measured in Au + Au collisions at sNN−−−√=200 GeV as a function of transverse momentum pT (1-14 GeV/c) and centrality. The extracted v2 coefficients are found to be consistent between the two meson species over the measured pT range. The ratio of v4/v22 for π0 mesons is found to be independent of pT for 1-9 GeV/c, implying a lack of sensitivity of the ratio to the change of underlying physics with pT. Furthermore, the ratio of v4/v22 is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
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Journal articles
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http://hal.in2p3.fr/in2p3-00944766
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, February 11, 2014 - 10:39:29 AM
Last modification on : Friday, November 13, 2020 - 9:12:25 AM
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, February 11, 2014 - 10:39:29 AM
Last modification on : Friday, November 13, 2020 - 9:12:25 AM
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- HAL Id : in2p3-00944766, version 1
- DOI : 10.1103/PhysRevC.88.064910
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IN2P3 | IPNO | LLR | LPC-CLERMONT | CNRS | X | X-LLR | CEA | DSM-IRFU | PRES_CLERMONT | CEA-DRF | X-DEP-PHYS
Citation
A. Adare, H. Pereira, C. Silvestre, D. Jouan, E. T. Atomssa, et al.. Azimuthal anisotropy of π0 and η mesons in Au + Au collisions at sNN−−−√=200 GeV. Physical Review C, American Physical Society, 2013, 88, pp.064910. ⟨10.1103/PhysRevC.88.064910⟩. ⟨in2p3-00944766⟩
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