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| Verfasst von: | Abelev, Betty [VerfasserIn]  |
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| | Busch, Oliver [VerfasserIn] |
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| | Engel, Heiko [VerfasserIn] |
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| | Glässel, Peter [VerfasserIn] |
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| | Grajcarek, Robert [VerfasserIn] |
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| | Herrmann, Norbert [VerfasserIn] |
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| | Krawutschke, Tobias [VerfasserIn] |
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| | Kweon, MinJung [VerfasserIn] |
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| | Lara Martinez, Camilo Ernesto [VerfasserIn] |
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| | Lohner, Daniel [VerfasserIn] |
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| | Mercado Pérez, Jorge [VerfasserIn] |
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| | Oyama, Ken [VerfasserIn] |
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| | Pachmayer, Yvonne C. [VerfasserIn] |
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| | Reygers, Klaus [VerfasserIn] |
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| | Schicker, Rainer [VerfasserIn] |
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| | Schweda, Kai [VerfasserIn] |
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| | Stachel, Johanna [VerfasserIn] |
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| | Ulrich, Joachim [VerfasserIn] |
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| | Vallero, Sara [VerfasserIn] |
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| | Wiechula, Jens [VerfasserIn] |
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| | Windelband, Bernd [VerfasserIn] |
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| | Zelnicek, Pierre [VerfasserIn] |
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| | Zimmermann, Alice [VerfasserIn] |
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| Titel: | Measurement of event background fluctuations for charged particle jet reconstruction in PPb-Pb collisions at √sNN=2.76TeV |
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| Körperschaft: | ALICE (Körperschaft) [VerfasserIn] |
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| Verf.angabe: | the ALICE collaboration |
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| E-Jahr: | 2012 |
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| Jahr: | March 16, 2012 |
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| Umfang: | 26 S. |
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| Fussnoten: | Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt ; The ALICE Collaboration: B. Abelev, O. Busch, H. Engel, P. Glässel, R. Grajcarek, N. Herrmann, T. Krawutschke, M.J. Kweon, C. Lara, D. Lohner, J. Mercado Pérez, K. Oyama, Y. Pachmayer, K. Reygers, R. Schicker, K. Schweda, J. Stachel, J. Ulrich, S. Vallero, J. Wiechula, B. Windelband, P. Zelnicek, A. Zimmermann [und weitere] ; Gesehen am 30.11.2018 |
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| Titel Quelle: | Enthalten in: Journal of high energy physics |
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| Ort Quelle: | Berlin : Springer, 1997 |
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| Jahr Quelle: | 2012 |
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| Band/Heft Quelle: | (2012), 3, Artikel-ID 53, Seite 1-26 |
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| ISSN Quelle: | 1029-8479 |
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| Abstract: | The effect of event background fluctuations on charged particle jet reconstruction in Pb-Pb collisions at sNN−−−√=2.76TeVsNN=2.76TeV \sqrt {{{s_{\text{NN}}}}} = {2}{.76}\,{\text{TeV}} has been measured with the ALICE experiment. The main sources of non-statistical fluctuations are characterized based purely on experimental data with an unbiased method, as well as by using single high p t particles and simulated jets embedded into real Pb-Pb events and reconstructed with the anti-k t jet finder. The influence of a low transverse momentum cut-off on particles used in the jet reconstruction is quantified by varying the minimum track p t between 0.15 GeV/c and 2 GeV/c. For embedded jets reconstructed from charged particles with p t > 0.15 GeV/c, the uncertainty in the reconstructed jet transverse momentum due to the heavy-ion background is measured to be 11.3 GeV/c (standard deviation) for the 10% most central Pb-Pb collisions, slightly larger than the value of 11.0 GeV/c measured using the unbiased method. For a higher particle transverse momentum threshold of 2 GeV/c, which will generate a stronger bias towards hard fragmentation in the jet finding process, the standard deviation of the fluctuations in the reconstructed jet transverse momentum is reduced to 4.8-5.0 GeV/c for the 10% most central events. A non-Gaussian tail of the momentum uncertainty is observed and its impact on the reconstructed jet spectrum is evaluated for varying particle momentum thresholds, by folding the measured fluctuations with steeply falling spectra. Open image in new window |
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| DOI: | doi:10.1007/JHEP03(2012)053 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: http://dx.doi.org/10.1007/JHEP03(2012)053 |
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| | Volltext: https://doi.org/10.1007/JHEP03(2012)053 |
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| | DOI: https://doi.org/10.1007/JHEP03(2012)053 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | Heavy Ions |
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| K10plus-PPN: | 1582694540 |
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| Verknüpfungen: | → Zeitschrift |
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Measurement of event background fluctuations for charged particle jet reconstruction in PPb-Pb collisions at √sNN=2.76TeV / Abelev, Betty [VerfasserIn]; March 16, 2012 (Online-Ressource)
