Charged jet cross section and fragmentation in proton-proton collisions at √s=7TeV
We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy √s=7 TeV. Jets with pseudorapidity |η|<0.5 are reconstructed from charged particles using the anti-kT jet-finding algori...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
31 January 2019
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| In: |
Physical review
Year: 2019, Jahrgang: 99, Heft: 1 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.99.012016 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1103/PhysRevD.99.012016 Verlag: https://link.aps.org/doi/10.1103/PhysRevD.99.012016 
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| Verfasserangaben: | S. Acharya et al.* (A Large Ion Collider Experiment Collaboration) |
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| 500 | |a A Large Ion Collider Experiment Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, S. Klewin, M.K. Köhler, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D.F. Weiser, B. Windelband [und weitere] | ||
| 500 | |a Im Text steht s unter dem Wurzelsymbol | ||
| 500 | |a Gesehen am 24.10.2019 | ||
| 520 | |a We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy √s=7 TeV. Jets with pseudorapidity |η|<0.5 are reconstructed from charged particles using the anti-kT jet-finding algorithm with a resolution parameter R=0.4. The jet cross section is measured in the transverse momentum interval 5≤pch jetT<100 GeV/c. Jet fragmentation is studied measuring the scaled transverse momentum spectra of the charged constituents of jets in four intervals of jet transverse momentum between 5 and 30 GeV/c. The measurements are compared to calculations from the pythia model as well as next-to-leading-order perturbative QCD calculations with powheg+pythia8. The charged jet cross section is well described by powheg for the entire measured range of pch jetT. For pch jetT>40 GeV/c, the pythia calculations also agree with the measured charged jet cross section. pythia6 simulations describe the fragmentation distributions to 15%. Larger discrepancies are observed for pythia8. | ||
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