Measurement of the Higgs boson coupling properties in the H→ZZ.sup.∗./sup.→4ℓ decay channel at √s = 13 TeV with the ATLAS detector

0500595 - FZÚ 2019 RIV US eng J - Journal Article
Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - 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 2906 authors
Measurement of the Higgs boson coupling properties in the H→ZZ^∗→4ℓ decay channel at √s = 13 TeV with the ATLAS detector.
Journal of High Energy Physics. Roč. 2018, č. 3 (2018), s. 1-60, č. článku 95. ISSN 1029-8479. E-ISSN 1029-8479
R&D Projects: GA MŠMT(CZ) LTT17018
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * new physics * experimental results * phase space * structure * rapidity * gluon * 13000 GeV-cms
OECD category: Particles and field physics
Impact factor: 5.833, year: 2018
Method of publishing: Open access

The coupling properties of the Higgs boson are studied in the four-lepton (e, μ) decay channel using 36.1 fb−1 of pp collision data from the LHC at a centre-of-mass energy of 13 TeV collected by the ATLAS detector. Cross sections are measured for the main production modes in several exclusive regions of the Higgs boson production phase space and are interpreted in terms of coupling modifiers. The inclusive cross section times branching ratio for H → ZZ∗ decay and for a Higgs boson absolute rapidity below 2.5 is measured to be 1. 73+ 0.24− 0.23 (stat.)+ 0.10− 0.08 (exp.) ± 0.04(th.) pb compared to the Standard Model prediction of 1.34±0.09 pb. In addition, the tensor structure of the Higgs boson couplings is studied using an effective Lagrangian approach for the description of interactions beyond the Standard Model. Constraints are placed on the non-Standard-Model CP-even and CP-odd couplings to Z bosons and on the CP-odd coupling to gluons.

Permanent Link: http://hdl.handle.net/11104/0292679