Szczegóły publikacji
Opis bibliograficzny
Search for non-resonant Higgs boson pair production in the $bb\ell\upsilon\ell\upsilon$ final state with the ATLAS detector in $pp$ collisions at $\sqrt{s}=13$ TeV / G. Aad, [et al.], L. ADAMCZYK, [et al.], T. BOŁD, [et al.], W. DĄBROWSKI, [et al.], G. P. GACH, [et al.], I. GRABOWSKA-BOŁD, [et al.], K. W. JANAS, [et al.], P. A. JANUS, [et al.], S. KOPERNY, [et al.], J. A. KREMER, [et al.], K. MAJ, [et al.], B. MINDUR, [et al.], A. OGRODNIK, [et al.], M. PRZYBYCIEŃ, [et al.] // Physics Letters. B ; ISSN 0370-2693. — 2020 — vol. 801 art. no. 135145, s. 1–22. — Bibliogr. s. 8–10, Abstr. — Publikacja dostępna online od: 2019-12-13
Autorzy (2955)
Dane bibliometryczne
ID BaDAP | 127812 |
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Data dodania do BaDAP | 2020-03-12 |
Tekst źródłowy | URL |
DOI | 10.1016/j.physletb.2019.135145 |
Rok publikacji | 2020 |
Typ publikacji | artykuł w czasopiśmie |
Otwarty dostęp | |
Creative Commons | |
Czasopismo/seria | Physics Letters, B |
Abstract
A search for non-resonant Higgs boson pair production, as predicted by the Standard Model, is presented, where one of the Higgs bosons decays via the H -> bb channel and the other via one of the H -> WW*/ZZ*/tau tau channels. The analysis selection requires events to have at least two b-tagged jets and exactly two leptons (electrons or muons) with opposite electric charge in the final state. Candidate events consistent with Higgs boson pair production are selected using a multi-class neural network discriminant. The analysis uses 139 fb(-1) of pp collision data recorded at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. An observed (expected) upper limit of 1.2 (0.9(-0.3)(+0.4)) pb is set on the non-resonant Higgs boson pair production cross-section at 95% confidence level, which is equivalent to 40 (29(-9)(+14)) times the value predicted in the Standard Model.