Evidence for the production of three massive vector bosons with the ATLAS detector

0520633 - FZÚ 2020 RIV NL eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Jakoubek, Tomáš - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2916 authors
Evidence for the production of three massive vector bosons with the ATLAS detector.
Physics Letters. B. Roč. 798, Nov (2019), s. 1-22, č. článku 134913. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT LM2015058
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * vector boson: massive * p p: scattering * lepton * same sign * electron * muon
OECD category: Particles and field physics
Impact factor: 4.384, year: 2019
Method of publishing: Open access

A search for the production of three massive vector bosons in proton–proton collisions is performed using data at s=13 TeV recorded with the ATLAS detector at the Large Hadron Collider in the years 2015–2017, corresponding to an integrated luminosity of 79.8 fb −1 . Events with two same-sign leptons ℓ (electrons or muons) and at least two reconstructed jets are selected to search for WWW→ℓνℓνqq . Events with three leptons without any same-flavour opposite-sign lepton pairs are used to search for WWW→ℓνℓνℓν , while events with three leptons and at least one same-flavour opposite-sign lepton pair and one or more reconstructed jets are used to search for WWZ→ℓνqqℓℓ . Finally, events with four leptons are analysed to search for WWZ→ℓνℓνℓℓ and WZZ→qqℓℓℓℓ . Evidence for the joint production of three massive vector bosons is observed with a significance of 4.1 standard deviations, where the expectation is 3.1 standard deviations.

Permanent Link: http://hdl.handle.net/11104/0305273