Počet záznamů: 1  

Measurement of the cross section of high transverse momentum Z→bb¯ production in proton-proton collisions at √s = 8TeV with the ATLAS detector

  1. 1.
    0439835 - FZÚ 2015 RIV NL eng J - Článek v odborném periodiku
    Aad, G. - Abbott, B. - Abdallah, J. - Böhm, Jan - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2877 autorů
    Measurement of the cross section of high transverse momentum Z→bb¯ production in proton-proton collisions at √s = 8TeV with the ATLAS detector.
    Physics Letters. B. Roč. 738, Nov (2014), 25-43. ISSN 0370-2693. E-ISSN 1873-2445
    Grant CEP: GA MŠMT(CZ) LG13009
    Institucionální podpora: RVO:68378271
    Klíčová slova: ATLAS * dijet * mass spectrum * CERN LHC Coll * background * Z0 * hadroproduction * dimuon
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 6.131, rok: 2014

    This Letter reports the observation of a high transverse momentum Z→bb¯ signal in proton-proton collisions at s√=8 TeV and the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5 fb−1. The Z→bb¯ decay is reconstructed from a pair of b-tagged jets, clustered with the anti-kt jet algorithm with R=0.4, that have low angular separation and form a dijet with pT>200 GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet background mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be σfidZ→bb¯=2.02±0.20(stat.)±0.25(syst.)±0.06(lumi.)pb=2.02±0.33pb, in good agreement with next-to-leading-order theoretical predictions.
    Trvalý link: http://hdl.handle.net/11104/0243044

     
     
Počet záznamů: 1  

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