Aaboud, M;
Aad, G;
Abbott, B;
Abdinov, O;
Abeloos, B;
Abhayasinghe, DK;
Abidi, SH;
... Zwalinski, L; + view all
(2018)
Search for Resonant and Nonresonant Higgs Boson Pair Production in the b(b)over-bar tau(+) tau(-) Decay Channel in pp Collisions at root s=13 TeV with the ATLAS Detector.
Physical Review Letters
, 121
(19)
, Article 191801. 10.1103/PhysRevLett.121.191801.
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Abstract
A search for resonant and nonresonant pair production of Higgs bosons in the bb¯ τþτ− final state is presented. The search uses 36.1 fb−1 of pp collision data with ffiffi s p ¼ 13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. Decays of the τ-lepton pairs with at least one τ lepton decaying to final states with hadrons and a neutrino are considered. No significant excess above the expected background is observed in the data. The cross-section times branching ratio for nonresonant Higgs boson pair production is constrained to be less than 30.9 fb, 12.7 times the standard model expectation, at 95% confidence level. The data are also analyzed to probe resonant Higgs boson pair production, constraining a model with an extended Higgs sector based on two doublets and a Randall-Sundrum bulk graviton model. Upper limits are placed on the resonant Higgs boson pair production cross-section times branching ratio, excluding resonances X in the mass range 305 GeV < mX < 402 GeV in the simplified hMSSM minimal supersymmetric model for tan β ¼ 2 and excluding bulk Randall-Sundrum gravitons GKK in the mass range 325 GeV < mGKK < 885 GeV for k=M¯ Pl ¼ 1.
| Type: | Article |
|---|---|
| Title: | Search for Resonant and Nonresonant Higgs Boson Pair Production in the b(b)over-bar tau(+) tau(-) Decay Channel in pp Collisions at root s=13 TeV with the ATLAS Detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.121.191801 |
| Publisher version: | http://doi.org/10.1103/PhysRevLett.121.191801 |
| Language: | English |
| Additional information: | Copyright © 2018 CERN, for the ATLAS Collaboration.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. |
| 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-pp.ucl.ac.uk/id/eprint/10062460 |
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