Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment

0496879 - FZÚ 2019 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 2853 authors
Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment.
Physical Review Letters. Roč. 120, č. 21 (2018), s. 1-20, č. článku 211802. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT LM2015058
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * decay modes * signature * channel cross section * branching ratio * upper limit * experimental results * 13000 GeV-cms
OECD category: Particles and field physics
Impact factor: 9.227, year: 2018

A direct search for the standard model Higgs boson decaying to a pair of charm quarks is presented. Associated production of the Higgs and Z bosons, in the decay mode ZH→ℓ+ℓ-cc¯ is studied. A data set with an integrated luminosity of 36.1  fb-1 of pp collisions at s=13TeV recorded by the ATLAS experiment at the LHC is used. The H→cc¯ signature is identified using charm-tagging algorithms. The observed (expected) upper limit on σ(pp→ZH)×B(H→cc¯) is 2.7 (3.9-1.1+2.1) pb at the 95% confidence level for a Higgs boson mass of 125 GeV, while the standard model value is 26 fb.

Permanent Link: http://hdl.handle.net/11104/0289554