Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in pp collisions at √s = 7 TeV with the ATLAS detector

0440857 - FZÚ 2015 RIV DE eng J - Článek v odborném periodiku
Aad, G. - Abajyan, T. - Abbott, B. - Böhm, Jan - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 3146 autorů
Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in pp collisions at √s = 7 TeV with the ATLAS detector.
New Journal of Physics. Roč. 16, Nov (2014), 1-44. ISSN 1367-2630. E-ISSN 1367-2630
Grant CEP: GA MŠMT(CZ) LG13009
Institucionální podpora: RVO:68378271
Klíčová slova: vector boson * transverse momentum * higher-order * ATLAS * CERN LHC Coll * background * CERN Lab * rapidity * cluster
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 3.558, rok: 2014

This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to all-hadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of s√=7TeV and correspond to an integrated luminosity of 4.6fb−1. The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-of-mass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum pT>320GeV and pseudorapidity |η|<1.9, is measured to be σW+Z=8.5±1.7 pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques.
Trvalý link: http://hdl.handle.net/11104/0243950