Butterworth, Jonathan;
ATLAS Collaboration;
(2023)
Search for a new pseudoscalar decaying into a pair of muons in events with a top-quark pair at
√
s
=
13
TeV
with the ATLAS detector.
Physical Review D: Particles, Fields, Gravitation and Cosmology
, 108
(9)
, Article 092007. 10.1103/PhysRevD.108.092007.
Preview |
Text
PhysRevD.108.092007.pdf - Published Version Download (50MB) | Preview |
Abstract
A search for a new pseudoscalar a -boson produced in events with a top-quark pair, where the a -boson decays into a pair of muons, is performed using √ s = 13 TeV pp collision data collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 139 fb − 1. The search targets the final state where only one top quark decays to an electron or muon, resulting in a signature with three leptons e μμ and μμμ . No significant excess of events above the Standard Model expectation is observed and upper limits are set on two signal models: p p → tt̄ a and p p → tt̄ with t → H ± b , H ± → W ± a , where a → μμ, in the mass ranges 15 GeV < m a < 72 GeV and 120 GeV ≤ m H ± ≤ 160 GeV.
| Type: | Article |
|---|---|
| Title: | Search for a new pseudoscalar decaying into a pair of muons in events with a top-quark pair at √ s = 13 TeV with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.108.092007 |
| Publisher version: | https://doi.org/10.1103/PhysRevD.108.092007 |
| 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-pp.ucl.ac.uk/id/eprint/10182510 |
Archive Staff Only
 |
View Item |
