Measurement of jet radial profiles in Pb-Pb collisions at √sNN=2.76 TeV
The jet radial structure and particle transverse momentum (pT) composition within jets are presented in centrality-selected Pb-Pb collisions at sNN=2.76 TeV. Track-based jets, which are also called charged jets, were reconstructed with a resolution parameter of R=0.3 at midrapidity |ηch jet|<0.6...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
12 July 2019
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| In: |
Physics letters
Year: 2019, Volume: 796, Pages: 204-219 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2019.07.020 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2019.07.020 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269319304769 
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| Author Notes: | ALICE Collaboration* |
MARC
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| 246 | 3 | 3 | |a Measurement of jet radial profiles 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. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, S. Klewin, M.K. Köhler, L. Leardini, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, J. Stachel, D.F. Weiser, B. Windelband [und 1002 weitere Personen] | ||
| 500 | |a Gesehen am 25.01.2022 | ||
| 520 | |a The jet radial structure and particle transverse momentum (pT) composition within jets are presented in centrality-selected Pb-Pb collisions at sNN=2.76 TeV. Track-based jets, which are also called charged jets, were reconstructed with a resolution parameter of R=0.3 at midrapidity |ηch jet|<0.6 for transverse momenta pT,ch jet=30-120 GeV/c. Jet-hadron correlations in relative azimuth and pseudorapidity space (Δφ,Δη) are measured to study the distribution of the associated particles around the jet axis for different pT,assoc-ranges between 1 and 20 GeV/c. The data in Pb-Pb collisions are compared to reference distributions for pp collisions, obtained using embedded PYTHIA simulations. The number of high-pT associate particles (4<pT,assoc<20 GeV/c) in Pb-Pb collisions is found to be suppressed compared to the reference by 30 to 10%, depending on centrality. The radial particle distribution relative to the jet axis shows a moderate modification in Pb-Pb collisions with respect to PYTHIA. High-pT associate particles are slightly more collimated in Pb-Pb collisions compared to the reference, while low-pT associate particles tend to be broadened. The results, which are presented for the first time down to pT,ch jet=30 GeV/c in Pb-Pb collisions, are compatible with both previous jet-hadron-related measurements from the CMS Collaboration and jet shape measurements from the ALICE Collaboration at higher pT, and add further support for the established picture of in-medium parton energy loss. | ||
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