Beam-energy dependence of the directed flow of deuterons in Au+Au collisions
We present a measurement of the first-order azimuthal anisotropy v1 of deuterons from Au+Au collisions at √sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV recorded with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The energy dependence of the v1(y) slope, dv1/dy|y=0, for deuterons, w...
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| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
16 October 2020
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| In: |
Physical review
Year: 2020, Jahrgang: 102, Heft: 4 |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.102.044906 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevC.102.044906 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.102.044906 
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| Verfasserangaben: | J. Adam, I.M. Deppner, N. Herrmann, P.C. Weidenkaff [und 359 weitere] (STAR Collaboration) |
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| 245 | 1 | 0 | |a Beam-energy dependence of the directed flow of deuterons in Au+Au collisions |c J. Adam, I.M. Deppner, N. Herrmann, P.C. Weidenkaff [und 359 weitere] (STAR Collaboration) |
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| 520 | |a We present a measurement of the first-order azimuthal anisotropy v1 of deuterons from Au+Au collisions at √sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV recorded with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The energy dependence of the v1(y) slope, dv1/dy|y=0, for deuterons, where y is the rapidity, is extracted for semicentral collisions (10%-40% centrality) and compared with that of protons. While the v1(y) slopes of protons are generally negative for √sNN>10GeV, those for deuterons are consistent with zero, a strong enhancement of the v1(y) slope of deuterons is seen at the lowest collision energy (the largest baryon density) at √sNN=7.7GeV. In addition, we report the transverse momentum dependence of v1 for protons and deuterons. The experimental results are compared with transport and coalescence models. | ||
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