Aaboud, M;
Aad, G;
Abbott, B;
Abbott, DC;
Abdinov, O;
Abud, AA;
Abhayasinghe, DK;
... Zwalinski, L; + view all
(2020)
Search for Higgs Boson Decays into a Z Boson and a Light Hadronically Decaying Resonance Using 13 TeV pp Collision Data from the ATLAS Detector.
Physical Review Letters
, 125
(22)
, Article 221802. 10.1103/PhysRevLett.125.221802.
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Abstract
A search for Higgs boson decays into a Z boson and a light resonance in two-lepton plus jet events is performed, using a p p collision dataset with an integrated luminosity of 139 fb − 1 collected at √ s = 13 TeV by the ATLAS experiment at the CERN LHC. The resonance considered is a light boson with a mass below 4 GeV from a possible extended scalar sector or a charmonium state. Multivariate discriminants are used for the event selection and for evaluating the mass of the light resonance. No excess of events above the expected background is found. Observed (expected) 95% confidence-level upper limits are set on the Higgs boson production cross section times branching fraction to a Z boson and the signal resonance, with values in the range 17–340 pb ( 16 + 6 − 5 – 32 0 + 130 − 90 pb ) for the different light spin-0 boson mass and branching fraction hypotheses, and with values of 110 and 100 pb ( 100 + 40 − 30 and 100 + 40 − 30 pb ) for the η c and J / ψ hypotheses, respectively.
| Type: | Article |
|---|---|
| Title: | Search for Higgs Boson Decays into a Z Boson and a Light Hadronically Decaying Resonance Using 13 TeV pp Collision Data from the ATLAS Detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.125.221802 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.125.221802 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10117759 |
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