Collective behavior in small systems
The presence of correlations between particles significantly separated in pseudorapidity in proton-proton and proton-nucleus collisions has raised questions about whether collective effects are observed in small collision systems as well as in heavy-ion collisions. The quantification of these long-r...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2017
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| In: |
Nuclear physics. A, Nuclear and hadronic physics
Year: 2017, Jahrgang: 967, Pages: 97-104 |
| ISSN: | 1873-1554 |
| DOI: | 10.1016/j.nuclphysa.2017.06.023 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1016/j.nuclphysa.2017.06.023 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0375947417302841 
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| Verfasserangaben: | Alice Ohlson |
| Zusammenfassung: | The presence of correlations between particles significantly separated in pseudorapidity in proton-proton and proton-nucleus collisions has raised questions about whether collective effects are observed in small collision systems as well as in heavy-ion collisions. The quantification of these long-range correlations by vn coefficients is of particular interest. A selection of the latest vn measurements is presented, including results from the recent d+Au beam energy scan at RHIC where a significant non-zero v2 is measured down to low center-of-mass energies (sNN=39GeV). Results from a collision system scan - comprising p+Au, d+Au, and 3He+Au collisions - are also shown to address the role of the initial nuclear geometry in the final state anisotropy. Finally, the challenge of measuring multi-particle cumulants, particularly c2{4}, in p+p collisions is discussed, and new methods for reducing the effects of non-flow are shown to produce a more robust measurement of v2{4} in p+p collisions. |
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| Beschreibung: | Available online 25 September 2017 Gesehen am 26.06.2018 |
| Beschreibung: | Online Resource |
| ISSN: | 1873-1554 |
| DOI: | 10.1016/j.nuclphysa.2017.06.023 |