Underlying-event properties in pp and p-Pb collisions at √sNN=5.02 TeV
We report about the properties of the underlying event measured with ALICE at the LHC in pp and p-Pb collisions at √sNN=5.02 Te. The event activity, quantified by charged-particle number and summed-pT densities, is measured as a function of the leading-particle transverse momentum (Pt trig). These q...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
June 5, 2023
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| In: |
Journal of high energy physics
Year: 2023, Heft: 6, Pages: 1-38 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP06(2023)023 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP06(2023)023
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| Verfasserangaben: | The ALICE collaboration |
MARC
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| 245 | 1 | 0 | |a Underlying-event properties in pp and p-Pb collisions at √sNN=5.02 TeV |c The ALICE collaboration |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 3 | |a Underlying-event properties in pp and p-Pb collisions at square root s NN = 5.02 TeV |
| 264 | 1 | |c June 5, 2023 | |
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| 500 | |a Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt | ||
| 500 | |a The ALICE collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, M.C. Danisch, V.J.G. Feuillard, S. Fokin, P. Glässel, M. Kroesen, J. Lopez, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, G. Skorodumovs, J. Stachel, S. Stiefelmaier, C.A. van Veen, M. Völkl, B. Windelband, A. Yüncü, F. Zanone [und viele weitere] | ||
| 500 | |a Gesehen am 25.10.2023 | ||
| 520 | |a We report about the properties of the underlying event measured with ALICE at the LHC in pp and p-Pb collisions at √sNN=5.02 Te. The event activity, quantified by charged-particle number and summed-pT densities, is measured as a function of the leading-particle transverse momentum (Pt trig). These quantities are studied in three azimuthal-angle regions relative to the leading particle in the event: toward, away, and transverse. Results are presented for three different pT thresholds (0.15, 0.5 and 1 GeV/c) at mid-pseudorapidity (|η| < 0.8). The event activity in the transverse region, which is the most sensitive to the underlying event, exhibits similar behaviour in both pp and p-Pb collisions, namely, a steep increase with pTtrig for low pTtrig, followed by a saturation at pTtrig ≈ 5 GeV/c. The results from pp collisions are compared with existing measurements at other centre-of-mass energies. The quantities in the toward and away regions are also analyzed after the subtraction of the contribution measured in the transverse region. The remaining jet-like particle densities are consistent in pp and p-Pb collisions for pTtrig >10 GeV/c, whereas for lower pTtrig values the event activity is slightly higher in p-Pb than in pp collisions. The measurements are compared with predictions from the PYTHIA 8 and EPOS LHC Monte Carlo event generators. | ||
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