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 - Článek v odborném periodiku
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 … celkem 2906 autorů
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
Grant CEP: GA MŠMT(CZ) LTT17018
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN LHC Coll * new physics * experimental results * phase space * structure * rapidity * gluon * 13000 GeV-cms
Obor OECD: Particles and field physics
Impakt faktor: 5.833, rok: 2018
Způsob publikování: 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.

Trvalý link: http://hdl.handle.net/11104/0292679