The ATLAS Collaboration, .;
(2018)
Observation of H→bb¯ decays and VH production with the ATLAS detector.
Physics Letters B
, 786
pp. 59-86.
10.1016/j.physletb.2018.09.013.
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Abstract
A search for the decay of the Standard Model Higgs boson into a b¯b pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of 79.8 fb−1were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13TeV. For a Higgs boson mass of 125GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the b¯b decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into b¯bto the Standard Model expectation is 1.01 ±0.12(stat.)+0.16−0.15(syst.). Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations.
| Type: | Article |
|---|---|
| Title: | Observation of H→bb¯ decays and VH production with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2018.09.013 |
| Publisher version: | https://doi.org/10.1016/j.physletb.2018.09.013 |
| Language: | English |
| Additional information: | © 2018 The Author(s). This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP. |
| 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/10058316 |
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