Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

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

Acharya, S ; Adolfsson, Jonatan LU ; Christiansen, Peter LU ; Ljunggren, Martin LU ; Nassirpour, Adrian LU orcid ; Oskarsson, Anders LU ; Richert, Tuva LU ; Vazquez Rueda, Omar LU ; Silvermyr, David LU orcid and Stenlund, Evert LU , et al. (2019) In Physical Review D 100(9).
Abstract
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; and (Less)
author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
100
issue
9
article number
092004
publisher
American Physical Society
external identifiers
  • scopus:85075185963
ISSN
2470-0010
DOI
10.1103/PhysRevD.100.092004
language
English
LU publication?
yes
id
9b8d4819-5275-4546-a515-e61a5d27002c
date added to LUP
2019-11-29 08:18:33
date last changed
2023-04-10 04:28:42
@article{9b8d4819-5275-4546-a515-e61a5d27002c,
  abstract     = {{The cross section of jets reconstructed from charged particles is measured in the transverse momentum range of 5&lt;pT&lt;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|&lt;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.}},
  author       = {{Acharya, S and Adolfsson, Jonatan and Christiansen, Peter and Ljunggren, Martin and Nassirpour, Adrian and Oskarsson, Anders and Richert, Tuva and Vazquez Rueda, Omar and Silvermyr, David and Stenlund, Evert and Zurlo, N}},
  issn         = {{2470-0010}},
  language     = {{eng}},
  number       = {{9}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{Measurement of charged jet cross section in pp collisions at √s=5.02  TeV}},
  url          = {{http://dx.doi.org/10.1103/PhysRevD.100.092004}},
  doi          = {{10.1103/PhysRevD.100.092004}},
  volume       = {{100}},
  year         = {{2019}},
}