Collaboration, ATLAS
(2019)
Search for bottom-squark pair production with the ATLAS detector in
final states containing Higgs bosons, $b$-jets and missing transverse
momentum.
JHEP, 12 (12).
060-060.
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Text
1908.03122v1.pdf - Published version Download (820kB) | Preview |
Abstract
The result of a search for the pair production of the lightest supersymmetric partner of the bottom quark ($\tilde{b}_{1}$) using 139 fb$^{-1}$ of proton-proton data collected at $\sqrt{s} = 13$ TeV by the ATLAS detector is reported. In the supersymmetric scenarios considered both of the bottom-squarks decay into a $b$-quark and the second-lightest neutralino, $\tilde{b}_{1} \rightarrow b + \tilde{\chi}^{0}_{2}$. Each $\tilde{\chi}^{0}_{2}$ is assumed to subsequently decay with 100% branching ratio into a Higgs boson ($h$) like the one in the Standard Model and the lightest neutralino: $\tilde{\chi}^{0}_{2} \rightarrow h + \tilde{\chi}^{0}_{1}$. The $\tilde{\chi}^{0}_{1}$ is assumed to be the lightest supersymmetric particle (LSP) and is stable. Two signal mass configurations are targeted: the first has a constant LSP mass of 60 GeV; and the second has a constant mass difference between the $\tilde{\chi}^{0}_{2}$ and $\tilde{\chi}^{0}_{1}$ of 130 GeV. The final states considered contain no charged leptons, three or more $b$-jets, and large missing transverse momentum. No significant excess of events over the Standard Model background expectation is observed in any of the signal regions considered. Limits at the 95% confidence level are placed in the supersymmetric models considered, and bottom-squarks with mass up to 1.5 TeV are excluded.
| Item Type: | Article |
|---|---|
| Additional Information: | 47 pages in total, author list starting page 31, 8 figures, 7 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-31/ |
| Uncontrolled Keywords: | hep-ex, hep-ex |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 13 Jan 2020 08:42 |
| Last Modified: | 19 Jan 2023 00:10 |
| DOI: | 10.1007/JHEP12(2019)060 |
| Open Access URL: | https://link.springer.com/article/10.1007%2FJHEP12... |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3069905 |
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