CERN Accelerating science

Article
Report number arXiv:2101.12527 ; CERN-EP-2021-001
Title Search for new phenomena in final states with b-jets and missing transverse momentum in s=13 TeV pp collisions with the ATLAS detector
Author(s) ATLAS Collaboration  Show all 2825 authors
Corporate Author(s) ATLAS Collaboration
Publication 2021-05-12
Imprint 28 Jan 2021
Number of pages 51
Note 49 pages in total, author list starting page 34, 10 figures, 7 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-34/
In: JHEP 2105 (2021) 093
DOI 10.1007/JHEP05(2021)093
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords supersymmetry ; particle and resonance production ; experimental results ; Dark Matter, leptoquarks
Abstract The results of a search for new phenomena in final states with b-jets and missing transverse momentum using 139 fb1 of proton-proton data collected at a centre-of-mass energy s=13 TeV by the ATLAS detector at the LHC are reported. The analysis targets final states produced by the decay of a pair-produced supersymmetric bottom squark into a bottom quark and a stable neutralino. The analysis also seeks evidence for models of pair production of dark matter particles produced through the decay of a generic scalar or pseudoscalar mediator state in association with a pair of bottom quarks, and models of pair production of scalar third-generation down-type leptoquarks. No significant excess of events over the Standard Model background expectation is observed in any of the signal regions considered by the analysis. Bottom squark masses below 1270 GeV are excluded at 95 % confidence level if the neutralino is massless. In the case of nearly mass-degenerate bottom squarks and neutralinos, the use of dedicated secondary-vertex identification techniques permits the exclusion of bottom squarks with masses up to 660 GeV for mass splittings between the squark and the neutralino of 10 GeV. These limits extend substantially beyond the regions of parameter space excluded by similar ATLAS searches performed previously.
Copyright/License publication: © 2021-2025 CERN (License: CC-BY-4.0), sponsored by SCOAP³
preprint: © 2021-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: tatjana.lenz@cern.ch


 Záznam vytvorený 2021-01-28, zmenený 2024-10-03


Article from SCOAP3:
Nahraj plný textPDF
Plný text:
Nahraj plný textPDF
External link:
Nahraj plný textPrevious draft version
  • Send to ScienceWise.info