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oai:tsukuba.repo.nii.ac.jp:00051929
2022-07-18T23:51:36Z
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Charged jet cross section and fragmentation in proton-proton collisions at √s=7??TeV
中條, 達也
チュウジョウ, タツヤ
CHUJO, Tatsuya
三明, 康郎
ミアケ, ヤスオ
MIAKE, Yasuo
新井田, 貴文
ニイダ, タカフミ
NIIDA, Takafumi
, Large Ion Collider Experiment Collaboration
open access
c 2019 CERN, for the ALICE Collaboration
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
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.
American Physical Society
2019-01
eng
journal article
VoR
http://hdl.handle.net/2241/00157358
https://tsukuba.repo.nii.ac.jp/records/51929
https://doi.org/10.1103/PhysRevD.99.012016
2470-0010
AA00773624
Physical review D
99
1
012016
https://tsukuba.repo.nii.ac.jp/record/51929/files/PRD_99-1-012016.pdf
application/pdf
515.0 kB
2019-08-23