Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13 TeV with the ATLAS detector

0520634 - FZÚ 2020 RIV NL 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 2914 authors
Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13 TeV with the ATLAS detector.
Physics Letters. B. Roč. 790, Nov (2019), s. 1-21. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT LM2015058
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * mass dependence * experimental results * 13000 GeV-cms
OECD category: Particles and field physics
Impact factor: 4.384, year: 2019
Method of publishing: Open access

A search for decays of the Higgs boson into a pair of new spin-zero particles, H→aa , where the a -bosons decay into a b -quark pair and a muon pair, is presented. The search uses 36.1 fb−1 of proton–proton collision data at s=13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. No significant deviation from the Standard Model prediction is observed. Upper limits at 95% confidence level are placed on the branching ratio (σH/σSM)×B(H→aa→bbμμ) , ranging from 1.2×10−4 to 8.4×10−4 in the a -boson mass range of 20–60 GeV. Model-independent limits are set on the visible production cross-section times the branching ratio to the bbμμ final state for new physics, σvis(X)×B(X→bbμμ) , ranging from 0.1 fb to 0.73 fb for mμμ between 18 and 62 GeV.

Permanent Link: http://hdl.handle.net/11104/0305276