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Title: | Search for bottom-squark pair production with the ATLAS detector in final states containing Higgs bosons, b-jets and missing transverse momentum |
Authors: | ATLAS CollaborationÁlvarez Piqueras, D.; Aparisi Pozo, J. A.; Bailey, A.J.; Barranco, Laura; Cabrera, Susana ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Keywords: | Hadron-Hadron scattering (experiments) Supersymmetry |
Issue Date: | Dec-2019 |
Publisher: | Institute of Physics Publishing |
Citation: | Journal of High Energy Physics 2019, 12: 060 (2019) |
Abstract: | The result of a search for the pair production of the lightest supersymmetric partner of the bottom quark (b˜ ) using 139 fb of proton-proton data collected at 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, b˜1→b+χ˜20. Each χ˜20 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: χ˜20→h+χ˜10. The χ˜10 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 χ˜20 and χ˜10 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. [Figure not available: see fulltext.] |
Publisher version (URL): | http://dx.doi.org/10.1007/JHEP12(2019)060 |
URI: | http://hdl.handle.net/10261/207841 |
DOI: | 10.1007/JHEP12(2019)060 |
Identifiers: | doi: 10.1007/JHEP12(2019)060 issn: 1029-8479 |
Appears in Collections: | (IFT) Artículos (IFIC) Artículos |
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