European Physical Journal C: Particles and Fields (Oct 2024)
The $$v^{1/3}_{3}/v^{1/2}_{2}$$ v 3 1 / 3 / v 2 1 / 2 ratio in PbAu collisions at $$\sqrt{s_{\textrm{NN}}} = $$ s NN = 17.3 GeV: a hint of a hydrodynamic behavior
- D. Adamová,
- G. Agakishiev,
- A. Andronic,
- D. Antończyk,
- H. Appelshäuser,
- V. Belaga,
- J. Bielčíková,
- P. Braun-Munzinger,
- O. Busch,
- A. Cherlin,
- S. Damjanović,
- T. Dietel,
- L. Dietrich,
- A. Drees,
- W. Dubitzky,
- S. I. Esumi,
- K. Filimonov,
- K. Fomenko,
- Z. Fraenkel,
- C. Garabatos,
- P. Glässel,
- G. Hering,
- J. Holeczek,
- M. Kalisky,
- G. Krobath,
- V. Kushpil,
- A. Maas,
- A. Marín,
- J. Milošević,
- D. Miśkowiec,
- Y. Panebrattsev,
- Z. Paulínyová,
- O. Petchenova,
- V. Petráček,
- S. Radomski,
- J. Rak,
- I. Ravinovich,
- P. Rehak,
- H. Sako,
- W. Schmitz,
- S. Schuchmann,
- S. Sedykh,
- S. Shimansky,
- J. Stachel,
- M. Šumbera,
- H. Tilsner,
- I. Tserruya,
- G. Tsiledakis,
- J. P. Wessels,
- T. Wienold,
- J. P. Wurm,
- S. Yurevich,
- V. Yurevich,
- CERES/NA45 Collaboration
Affiliations
- D. Adamová
- Nuclear Physics Institute, Czech Academy of Sciences
- G. Agakishiev
- Joint Institute of Nuclear Research
- A. Andronic
- Institut für Kernphysik, Universität Münster
- D. Antończyk
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt
- H. Appelshäuser
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt
- V. Belaga
- Joint Institute of Nuclear Research
- J. Bielčíková
- Max-Planck-Institut für Kernphysik
- P. Braun-Munzinger
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- O. Busch
- Physikalisches Institut, Universität Heidelberg
- A. Cherlin
- Department of Particle Physics, Weizmann Institute
- S. Damjanović
- Physikalisches Institut, Universität Heidelberg
- T. Dietel
- Institut für Kernphysik, Universität Münster
- L. Dietrich
- Physikalisches Institut, Universität Heidelberg
- A. Drees
- Department for Physics and Astronomy, SUNY Stony Brook
- W. Dubitzky
- Physikalisches Institut, Universität Heidelberg
- S. I. Esumi
- Physikalisches Institut, Universität Heidelberg
- K. Filimonov
- Physikalisches Institut, Universität Heidelberg
- K. Fomenko
- Joint Institute of Nuclear Research
- Z. Fraenkel
- Department of Particle Physics, Weizmann Institute
- C. Garabatos
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- P. Glässel
- Physikalisches Institut, Universität Heidelberg
- G. Hering
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- J. Holeczek
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- M. Kalisky
- Institut für Kernphysik, Universität Münster
- G. Krobath
- Physikalisches Institut, Universität Heidelberg
- V. Kushpil
- Nuclear Physics Institute, Czech Academy of Sciences
- A. Maas
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- A. Marín
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- J. Milošević
- Physikalisches Institut, Universität Heidelberg
- D. Miśkowiec
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- Y. Panebrattsev
- Joint Institute of Nuclear Research
- Z. Paulínyová
- Faculty of Science, P. J. Šafárik University
- O. Petchenova
- Joint Institute of Nuclear Research
- V. Petráček
- Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering
- S. Radomski
- Physikalisches Institut, Universität Heidelberg
- J. Rak
- Max-Planck-Institut für Kernphysik
- I. Ravinovich
- Department of Particle Physics, Weizmann Institute
- P. Rehak
- Instrumentation Division, Brookhaven National Laboratory
- H. Sako
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- W. Schmitz
- Physikalisches Institut, Universität Heidelberg
- S. Schuchmann
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt
- S. Sedykh
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- S. Shimansky
- Joint Institute of Nuclear Research
- J. Stachel
- Physikalisches Institut, Universität Heidelberg
- M. Šumbera
- Nuclear Physics Institute, Czech Academy of Sciences
- H. Tilsner
- Physikalisches Institut, Universität Heidelberg
- I. Tserruya
- Department of Particle Physics, Weizmann Institute
- G. Tsiledakis
- Research Division and Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung
- J. P. Wessels
- Institut für Kernphysik, Universität Münster
- T. Wienold
- Physikalisches Institut, Universität Heidelberg
- J. P. Wurm
- Max-Planck-Institut für Kernphysik
- S. Yurevich
- Joint Institute of Nuclear Research
- V. Yurevich
- Joint Institute of Nuclear Research
- CERES/NA45 Collaboration
- DOI
- https://doi.org/10.1140/epjc/s10052-024-13416-y
- Journal volume & issue
-
Vol. 84,
no. 10
pp. 1 – 8
Abstract
Abstract The Fourier harmonics, $$v_2$$ v 2 and $$v_3$$ v 3 of negative pions are measured at center-of-mass energy per nucleon pair of $$\sqrt{s_{\textrm{NN}}}$$ s NN = 17.3 GeV around midrapidity by the CERES/NA45 experiment at the CERN SPS in 0–30% central PbAu collisions with a mean centrality of 5.5%. The analysis is performed in two centrality bins as a function of the transverse momentum $$\mathrm {p_{\textrm{T}}}$$ p T from 0.05 GeV/c to more than 2 GeV/c. This is the first measurement of the $$v^{1/3}_{3}/v^{1/2}_{2}$$ v 3 1 / 3 / v 2 1 / 2 ratio as a function of transverse momentum at SPS energies, that reveals, independently of the hydrodynamic models, hydrodynamic behavior of the formed system. For $$\mathrm {p_{\textrm{T}}}$$ p T above 0.5 GeV/c, the ratio is nearly flat in accordance with the hydrodynamic prediction and as previously observed by the ATLAS and ALICE experiments at the much higher LHC energies. The results are also compared with the SMASH-vHLLE hybrid model predictions, as well as with the SMASH model applied alone.