ATLAS Collaboration;
(2020)
Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at √s=13 TeV.
Physical Review D
, 102
(11)
, Article 112006. 10.1103/PhysRevD.102.112006.
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Abstract
This paper describes a search for beyond the Standard Model decays of the Higgs boson into a pair of new spin-0 particles subsequently decaying into b -quark pairs, H → a a → ( b ¯ b ) ( b ¯ b ) , using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider at center-of-mass energy √ s = 13 TeV . This search focuses on the range 15 GeV ≤ m a ≤ 30 GeV , where the decay products are collimated; it is complementary to a previous search in the same final state targeting the range 20 GeV ≤ m a ≤ 60 GeV , where the decay products are well separated. A novel strategy for the identification of the a → b ¯ b decays is deployed to enhance the efficiency for topologies with small separation angles. The search is performed with 36 fb − 1 of integrated luminosity collected in 2015 and 2016 and sets upper limits on the production cross section of H → a a → ( b ¯ b ) ( b ¯ b ) , where the Higgs boson is produced in association with a Z boson.
| Type: | Article |
|---|---|
| Title: | Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at √s=13 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.102.112006 |
| Publisher version: | https://doi.org/10.1103/PhysRevD.102.112006 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). 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/10117760 |
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