Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7TeV

0522330 - FZÚ 2020 RIV DE eng J - Journal Article
Aad, G. - Abbott, B. - Abdallah, J. - 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 … Total 2891 authors
Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7TeV.
European Physical Journal C. Roč. 75, č. 4 (2015), s. 1-26, č. článku 158. ISSN 1434-6044. E-ISSN 1434-6052
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * proton–proton collisions * top quark * top-quark mass * fully hadronic
OECD category: Particles and field physics
Impact factor: 4.912, year: 2015
Method of publishing: Open access

The mass of the top quark is measured in a data set corresponding to 4.6 fb −1 of proton–proton collisions with centre-of-mass energy s√=7 TeV collected by the ATLAS detector at the LHC. Events consistent with hadronic decays of top–antitop quark pairs with at least six jets in the final state are selected. The substantial background from multijet production is modelled with data-driven methods that utilise the number of identified b -quark jets and the transverse momentum of the sixth leading jet, which have minimal correlation. The top-quark mass is obtained from template fits to the ratio of three-jet to dijet mass. The three-jet mass is calculated from the three jets produced in a top-quark decay. Using these three jets the dijet mass is obtained from the two jets produced in the W boson decay.
Permanent Link: http://hdl.handle.net/11104/0306845