Search for supersymmetry in final states with missing transverse momentum and charm-tagged jets using 139 fb⁻¹ of proton-proton collisions at √s = 13 TeV with the ATLAS detector

Aad, G.Aakvaag, E.Abbott, B.Abdelhameed, S.Abeling, K.Abicht, N.J.Abidi, S.H.Aboelela, M.Aboulhorma, A.Abramowicz, H.Abreu, H.Abulaiti, Y.Acharya, B.S.Ackermann, A.Adam Bourdarios, C.Adamczyk, L.Addepalli, S.V.Addison, M.J.Adelman, J.Adiguzel, A.et al.2025-10-122025-10-122025Journal of High Energy Physics (JHEP), 2025; 2025(2):193-0-193-521126-67081029-8479https://hdl.handle.net/2440/147714The paper presents a search for supersymmetric particles produced in protonproton collisions at √ s = 13TeV and decaying into final states with missing transverse momentum and jets originating from charm quarks. The data were taken with the ATLAS detector at the Large Hadron Collider at CERN from 2015 to 2018 and correspond to an integrated luminosity of 139 fb⁻¹. No significant excess of events over the expected Standard Model background expectation is observed in optimized signal regions, and limits are set on the production cross-sections of the supersymmetric particles. Pair production of charm squarks or top squarks, each decaying into a charm quark and the lightest supersymmetric particle ˜χ⁰₁ , is excluded at 95% confidence level for squarks with masses up to 900 GeV for scenarios where the mass of ˜χ⁰₁ is below 50 GeV. Additionally, the production of leptoquarks with masses up to 900 GeV is excluded for the scenario where up-type leptoquarks decay into a charm quark and a neutrino. Model-independent limits on cross-sections and event yields for processes beyond the Standard Model are also reported.enOpen Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.Hadron-Hadron Scattering; SupersymmetrySearch for supersymmetry in final states with missing transverse momentum and charm-tagged jets using 139 fb⁻¹ of proton-proton collisions at √s = 13 TeV with the ATLAS detectorSearch for supersymmetry in final states with missing transverse momentum and charm-tagged jets using 139 fb(-1) of proton-proton collisions at root s = 13 TeV with the ATLAS detectorJournal article10.1007/jhep02(2025)193734352Jackson, P. [0000-0002-0847-402X]Potti, H. [0000-0002-0800-9902]Ting, E.X.L. [0000-0002-5886-6339]White, M.J. [0000-0001-5474-4580]