A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Measurement of charged jet cross section in pp collisions at √s = 5.02 TeV (2019)
ALICE Collaboration. (2019). Measurement of charged jet cross section in pp collisions at √s = 5.02 TeV. Physical Review D, 100(9), Article 092004. https://doi.org/10.1103/PhysRevD.100.092004
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Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: ALICE Collaboration
Lehti tai sarja: Physical Review D
ISSN: 2470-0010
eISSN: 2470-0029
Julkaisuvuosi: 2019
Volyymi: 100
Lehden numero: 9
Artikkelinumero: 092004
Kustantaja: American Physical Society
Julkaisumaa: Yhdysvallat (USA)
Julkaisun kieli: englanti
DOI: https://doi.org/10.1103/PhysRevD.100.092004
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/67081
Julkaisu on rinnakkaistallennettu: https://arxiv.org/abs/1905.02536
Tiivistelmä
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.
YSO-asiasanat: hiukkasfysiikka
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2019
JUFO-taso: 2
