Relative particle yield fluctuations in Pb-Pb collisions at √sNN=2.76 TeV
First results on K/πK/π\hbox {K}/\pi , p/πp/π\hbox {p}/\pi and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in Pb--Pb Pb--Pb \text{ Pb--Pb } collisions at sNN−−−√=2.76 TeVsNN=2.76 TeV\sqrt{s_\mathrm{{NN}}} =2.76\hbox { TeV}. The observable νdynνdy...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
14 March 2019
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| In: |
The European physical journal. C, Particles and fields
Year: 2019, Jahrgang: 79, Heft: 3, Pages: 236 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-019-6711-x |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1140/epjc/s10052-019-6711-x
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| Verfasserangaben: | ALICE Collaboration |
MARC
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| 245 | 1 | 0 | |a Relative particle yield fluctuations in Pb-Pb collisions at √sNN=2.76 TeV |c ALICE Collaboration |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 3 | |a Relative particle yield fluctuations in Pb-Pb collisions at square root s NN = 2.76 TeV |
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| 500 | |a Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt | ||
| 500 | |a ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, A. Deisting, P. Glässel, J. Kim, S. Klewin, M.K. Köhler, L. Leardini, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D.F. Weiser, B. Windelband [und weitere] | ||
| 500 | |a Gesehen am 21.06.2019 | ||
| 520 | |a First results on K/πK/π\hbox {K}/\pi , p/πp/π\hbox {p}/\pi and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in Pb--Pb Pb--Pb \text{ Pb--Pb } collisions at sNN−−−√=2.76 TeVsNN=2.76 TeV\sqrt{s_\mathrm{{NN}}} =2.76\hbox { TeV}. The observable νdynνdyn\nu _{\mathrm{dyn}}, which is defined in terms of the moments of particle multiplicity distributions, is used to quantify the magnitude of dynamical fluctuations of relative particle yields and also provides insight into the correlation between particle pairs. This study is based on a novel experimental technique, called the Identity Method, which allows one to measure the moments of multiplicity distributions in case of incomplete particle identification. The results for p/πp/π\hbox {p}/\pi show a change of sign in νdynνdyn\nu _{\mathrm{dyn}} from positive to negative towards more peripheral collisions. For central collisions, the results follow the smooth trend of the data at lower energies and νdynνdyn\nu _{\mathrm{dyn}} exhibits a change in sign for p/πp/π\hbox {p}/\pi and K/p. | ||
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