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

Rimoldi, Marco; Mullier, Geoffrey; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Meloni, Federico; Beck, Hans Peter; Ereditato, Antonio (2018). 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, 2018(3) Springer 10.1007/JHEP03(2018)095

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

27 Jun 2019 08:15

Last Modified:

24 Oct 2019 09:19

Publisher DOI:

10.1007/JHEP03(2018)095

ArXiv ID:

1712.02304

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.7892/boris.129088

URI:

https://boris.unibe.ch/id/eprint/129088

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