Measurement of Ds+ production and nuclear modification factor in Pb-Pb collisions at √sNN=2.76 TeV
The production of prompt Ds+mesons was measured for the first time in collisions of heavy nuclei with the ALICE detector at the LHC. The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, sNN$$ \sqrt{s_{\mathrm{NN}}} $$, of 2.76 TeV in two differ...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
March 14, 2016
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| In: |
Journal of high energy physics
Year: 2016, Heft: 3 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP03(2016)082 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP03(2016)082
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| Verfasserangaben: | The ALICE Collaboration |
MARC
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| 245 | 1 | 0 | |a Measurement of Ds+ production and nuclear modification factor in Pb-Pb collisions at √sNN=2.76 TeV |c The ALICE Collaboration |
| 246 | 3 | 0 | |a sqrt, plus |
| 246 | 3 | 3 | |a Measurement of D s + production and nuclear modification factor in Pb-Pb collisions at square root sNN = 2.76 TeV |
| 264 | 1 | |c March 14, 2016 | |
| 300 | |a 33 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
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| 500 | |a Im Titel ist "s" tiefgestellt und "+" hochgestellt | ||
| 500 | |a Im Titel ist "NN" nach s tiefgestellt, der ganze Ausdruck "s NN" steht unter dem Wurzelsymbol | ||
| 500 | |a ALICE collaboration: J. Adam, V. Anguelov, F. Bock, O. Busch, A. Deisting, M.G. Fleck, P. Glässel, L. Karayan, J. Klein, S. Klewin, M.L. Knichel, L. Leardini, J. Mercado Pérez, H. Oeschler, K. Oyama, Y. Pachmayer, F. Reidt, K. Reygers, R. Schicker, J. Stachel, J.H. Stiller, M.A. Völkl, D.F.Weiser, J. Wilkinson, B. Windelband, M. Winn, A. Zimmermann [und 955 weitere] | ||
| 500 | |a Gesehen am 30.07.2020 | ||
| 520 | |a The production of prompt Ds+mesons was measured for the first time in collisions of heavy nuclei with the ALICE detector at the LHC. The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, sNN$$ \sqrt{s_{\mathrm{NN}}} $$, of 2.76 TeV in two different centrality classes, namely 0-10% and 20-50%. Ds+mesons and their antiparticles were reconstructed at mid-rapidity from their hadronic decay channel Ds+ → ϕπ+, with ϕ → K−K+, in the transverse momentum intervals 4 < pT < 12GeV/c and 6 < pT < 12 GeV/c for the 0-10% and 20-50% centrality classes, respectively. The nuclear modification factor RAA was computed by comparing the pT-differential production yields in Pb-Pb collisions to those in proton-proton (pp) collisions at the same energy. This pp reference was obtained using the cross section measured at s=7$$ \sqrt{s}=7 $$TeV and scaled to s=2.76$$ \sqrt{s}=2.76 $$TeV. The RAA of Ds+mesons was compared to that of non-strange D mesons in the 10% most central Pb-Pb collisions. At high pT (8 < pT < 12 GeV/c) a suppression of the Ds+-meson yield by a factor of about three, compatible within uncertainties with that of non-strange D mesons, is observed. At lower pT (4 < pT < 8 GeV/c) the values of the Ds+-meson RAA are larger than those of non-strange D mesons, although compatible within uncertainties. The production ratios Ds+/D0 and Ds+/D+ were also measured in Pb-Pb collisions and compared to their values in proton-proton collisions. | ||
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