Abstract
The
cross section of jets reconstructed from charged particles is measured
in the transverse momentum range of 5 <p(T) <100 GeV/c in pp
collisions at the center-of-mass energy of root s = 5.02 TeV with the
ALICE detector. The jets are reconstructed using the anti-k(T) algorithm
with resolution parameters R = 0.2, 0.3, 0.4, and 0.6 in the
pseudorapidity range vertical bar eta vertical bar <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 p(T) to
high p(T) and saturate at high p(T), indicating that jet collimation is
larger at high p(T) than at low p(T). 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.
Original language | English |
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Article number | 133 |
Journal | Physical Review D |
Volume | 100 |
Issue number | 9 |
Number of pages | 22 |
ISSN | 2470-0010 |
DOIs | |
Publication status | Published - 13 Nov 2019 |
MoE publication type | A1 Journal article-refereed |
Fields of Science
- 114 Physical sciences