Počet záznamů: 1  

Charged jet cross sections and properties in proton-proton collisions at root s=7 TeV

  1. 1.
    0445828 - UJF-V 2016 RIV US eng J - Článek v odborném periodiku
    Abelev, B. - Adam, J. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Brož, M. - Čepila, J. - Contreras, J. G. - Ferencei, Jozef - Hladký, Jan - Křelina, M. - Křížek, Filip - Kučera, Vít - Kushpil, Svetlana - Mareš, Jiří A. - Pachr, M. - Petráček, V. - Petráň, M. - Schulc, M. - Špaček, M. - Šumbera, Michal - Vajzer, Michal - Wagner, V. - Závada, Petr
    Charged jet cross sections and properties in proton-proton collisions at root s=7 TeV.
    Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 91, č. 11 (2015), s. 112012. ISSN 1550-7998
    Grant CEP: GA MŠk(CZ) LG13031
    Institucionální podpora: RVO:68378271 ; RVO:61389005
    Klíčová slova: ALICE collaboration * transverse momentum * ATLAS detector
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače; BF - Elementární částice a fyzika vys. energií (FZU-D)
    Impakt faktor: 4.643, rok: 2014

    Jets are reconstructed from charged particle momenta in the midrapidity region using the sequential recombination k(T) and anti-k(T) as well as the SISCone jet finding algorithms with several resolution parameters in the range R = 0.2-0.6. Differential jet production cross sections measured with the three jet finders are in agreement in the transverse momentum (p(T)) interval 20 < p(T)(jet,ch) < 100 GeV/c. They are also consistent with prior measurements carried out at the LHC by the ATLAS Collaboration. The jet charged particle multiplicity rises monotonically with increasing jet p(T), in qualitative agreement with prior observations at lower energies. The transverse profiles of leading jets are investigated using radial momentum density distributions as well as distributions of the average radius containing 80% (< R-80 >) of the reconstructed jet p(T). The fragmentation of leading jets with R = 0.4 using scaled p(T) spectra of the jet constituents is studied. The measurements are compared to model calculations from event generators. The measured radial density distributions and < R-80 > distributions are well described by the PYTHIA model (tune Perugia-2011). The fragmentation distributions are better described by HERWIG.
    Trvalý link: http://hdl.handle.net/11104/0247881