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Measurement of charged jet cross section in pp collisions at √s=5.02 TeV

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The cross section of jets reconstructed from charged particles is measured in the transverse momentum range of 5<pT<100 GeV/c in pp collisions at the center-of-mass energy of √s=5.02 TeV with the ALICE detector. The jets are reconstructed using the anti-kT algorithm with resolution parameters...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Arslandok, Mesut (Author) , Danisch, Meike (Author) , Feuillard, Victor (Author) , Glässel, Peter (Author) , Kim, Jiyoung (Author) , Kim, Minjung (Author) , Köhler, Markus Konrad (Author) , Ohlson, Alice (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Schmah, Alexander (Author) , Schmidt, Marten Ole (Author) , Stachel, Johanna (Author) , Windelband, Bernd (Author) , Yüncü, Alperen (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 13 November 2019
In: Physical review
Year: 2019, Volume: 100, Issue: 9
ISSN:2470-0029
DOI:10.1103/PhysRevD.100.092004
Online Access:Verlag, Volltext: https://doi.org/10.1103/PhysRevD.100.092004
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.100.092004
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Author Notes:S. Acharya et al.*(A Large Ion Collider Experiment Collaboration)
Description
Summary:The cross section of jets reconstructed from charged particles is measured in the transverse momentum range of 5<pT<100 GeV/c in pp collisions at the center-of-mass energy of √s=5.02 TeV with the ALICE detector. The jets are reconstructed using the anti-kT algorithm with resolution parameters R=0.2, 0.3, 0.4, and 0.6 in the pseudorapidity range |η|<0.9−R. The charged jet cross sections are compared with the leading-order (LO) and to next-to-leading-order (NLO) perturbative quantum chromodynamics (pQCD) calculations. It is found that the NLO calculations agree better with the measurements. The cross section ratios for different resolution parameters are also measured. These ratios increase from low pT to high pT and saturate at high pT, indicating that jet collimation is larger at high pT than at low pT. These results provide a precision test of pQCD predictions and serve as a baseline for the measurement in Pb-Pb collisions at the same energy to quantify the effects of the hot and dense medium created in heavy-ion collisions at the LHC.
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S. Acharya, V. Anguelov, M. Arslandok, M. Danisch, V. Feuillard, P. Glässel, J. Kim, M. Kim, M.K. Köhler, A. Ohlson, Y.C. Pachmayer, K. Reygers, R. Schicker, A.M. Schmah, M.O. Schmidt, J. Stachel, B. Windelband, A. Yuncu [und weitere]
Gesehen am 14.02.2020
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.100.092004

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