Observation of Electroweak production of a same-sign W boson pair in association with two jets in pp collisions at s =13 TeV with the ATLAS detector

0519348 - FZÚ 2020 RIV US eng J - Journal Article
Aaboud, M. - Aad, G. - Abbott, B. - 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 2921 authors
Observation of Electroweak production of a same-sign W boson pair in association with two jets in pp collisions at s =13 TeV with the ATLAS detector.
Physical Review Letters. Roč. 123, č. 6 (2019), s. 1-21, č. článku 161801. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT LM2015058
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * phase space * background * electron * final state * ((n)jet dilepton) * dijet * mass spectrum * muon
OECD category: Particles and field physics
Impact factor: 8.385, year: 2019
Method of publishing: Open access

This Letter presents the observation and measurement of electroweak production of a same-sign W boson pair in association with two jets using 36.1  fb-1 of proton-proton collision data recorded at a center-of-mass energy of s=13  TeV by the ATLAS detector at the Large Hadron Collider. The analysis is performed in the detector fiducial phase-space region, defined by the presence of two same-sign leptons, electron or muon, and at least two jets with a large invariant mass and rapidity difference. A total of 122 candidate events are observed for a background expectation of 69±7 events, corresponding to an observed signal significance of 6.5 standard deviations. The measured fiducial signal cross section is σfid=2.89-0.48+0.51(stat)-0.28+0.29(syst)  fb.


Permanent Link: http://hdl.handle.net/11104/0304341