Search for new phenomena in events with two opposite-charge leptons, jets and missing transverse momentum in pp collisions at $ \sqrt{\mathrm{s}} $ = 13 TeV with the ATLAS detector
2021-04-16 | journal article. A publication with affiliation to the University of Göttingen.
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Search for new phenomena in events with two opposite-charge leptons, jets and missing transverse momentum in pp collisions at $ \sqrt{\mathrm{s}} $ = 13 TeV with the ATLAS detector
Aad, G.; Abbott, B.; Abbott, D. C.; Abed Abud, A.; Abeling, K.; Abhayasinghe, D. K. & Abidi, S. H. et al. (2021)
Journal of High Energy Physics, 2021(4) art. 165. DOI: https://doi.org/10.1007/JHEP04(2021)165
Documents & Media
Details
- Authors Group
- The ATLAS collaboration
The authors list is uncomplete: - Authors
- Aad, G.; Abbott, B.; Abbott, D. C.; Abed Abud, A.; Abeling, K.; Abhayasinghe, D. K.; Abidi, S. H.; AbouZeid, O. S.; Abraham, N. L.; Achkar, B.; Albert, J.; Ali, S.; Anthony, M. T.; Arnold, H.; Balaji, S.; Bauer, F.; Cao, T.; Chen, J.; Chen, J.; Chen, J.; Chen, S.; Chen, Y.; David, C.; De Castro, S.; Dreyer, T.; Falke, S.; Fischer, J.; Fournier, D.; Gao, Y.; Gao, Y. S.; George, S.; Grosse-Knetter, J.; Guenther, J.; Han, S.; Harenberg, T.; Heim, S.; Heim, T.; Herrmann, T.; Holm, T.; Hu, S.; Jin, S.; Kaplan, L. S.; Keller, J. S.; Kersten, S.; Kim, E.; Kluth, S.; Krüger, H.; Kuhl, T.; Lai, S.; Lee, S.; Lehmann, K.; Lehmann, N.; Li, H.; Li, H.; Li, J.; Li, K.; Li, X.; Li, Y.; Liu, B.; Lorenz, J.; Lu, M.; Lutz, M. S.; Martinez, M.; Menke, S.; Meyer, C.; Morgenstern, S.; Mueller, J.; Quadt, A.; Rajagopalan, S.; Rave, S.; Schaefer, L.; Schoening, A.; Schott, M.; Schulte, A.; Seitz, C.; Sen, S.; Wang, C.; Wang, C.; Wang, H.; Wang, H.; Wang, J.; Wang, Y.; Weber, M. S.; Xu, T.; Xu, Y.; Zhang, B.; Zhang, J.; Zhang, K.; Zhang, M.; Zhang, Y.; Zhao, Z.; Zhou, Y.; Zhu, C.
- Abstract
- A bstract The results of a search for direct pair production of top squarks and for dark matter in events with two opposite-charge leptons (electrons or muons), jets and missing transverse momentum are reported, using 139 fb − 1 of integrated luminosity from proton-proton collisions at $ \sqrt{s} $ s = 13 TeV, collected by the ATLAS detector at the Large Hadron Collider during Run 2 (2015–2018). This search considers the pair production of top squarks and is sensitive across a wide range of mass differences between the top squark and the lightest neutralino. Additionally, spin-0 mediator dark-matter models are considered, in which the mediator is produced in association with a pair of top quarks. The mediator subsequently decays to a pair of dark-matter particles. No significant excess of events is observed above the Standard Model background, and limits are set at 95% confidence level. The results exclude top squark masses up to about 1 TeV, and masses of the lightest neutralino up to about 500 GeV. Limits on dark-matter production are set for scalar (pseudoscalar) mediator masses up to about 250 (300) GeV.
- Issue Date
- 16-April-2021
- Publisher
- Springer Berlin Heidelberg
- Journal
- Journal of High Energy Physics
- eISSN
- 1029-8479
- Language
- English
