Observation of WWW production in pp collisions at √s = 13 TeV with the ATLAS detector

0562008 - FZÚ 2023 RIV US eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2857 authors
Observation of WWW production in pp collisions at √s = 13 TeV with the ATLAS detector.
Physical Review Letters. Roč. 129, č. 6 (2022), č. článku 061803. ISSN 0031-9007. E-ISSN 1079-7114
Research Infrastructure: CERN-CZ II - 90104; e-INFRA CZ - 90140
Institutional support: RVO:68378271
Keywords : channel cross section: measured * p p: scattering * W: decay modes
OECD category: Particles and field physics
Impact factor: 8.6, year: 2022
Method of publishing: Open access

This Letter reports the observation of WWWWWW production and a measurement of its cross section using 139 fb−1−1 of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. Events with two same-sign leptons (electrons or muons) and at least two jets, as well as events with three charged leptons, are selected. A multivariate technique is then used to discriminate between signal and background events. Events from WWWWWW production are observed with a significance of 8.0 standard deviations, where the expectation is 5.4 standard deviations. The inclusive WWWWWW production cross section is measured to be 820±100 (stat)±80 (syst)820±100(stat)±80(syst) fb, approximately 2.6 standard deviations from the predicted cross section of 511±18511±18 fb calculated at next-to-leading-order QCD and leading-order electroweak accuracy.
Permanent Link: https://hdl.handle.net/11104/0336499