Search for bottom-squark pair production in pp collision events at root s=13 TeV with hadronically decaying tau-leptons, b-jets, and missing transverse momentum using the ATLAS detector
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American Physical Society
Aad, G... [et al.] (2021). Search for bottom-squark pair production in p p collision events at s= 13 TeV with hadronically decaying τ-leptons, b-jets, and missing transverse momentum using the ATLAS detector. Physical Review D, 104(3), 032014. DOI: [10.1103/PhysRevD.104.032014]
SponsorshipCERN; ANPCyT; YerPhI, Armenia; Australian Research Council; BMWFW; Austrian Science Fund (FWF); Azerbaijan National Academy of Sciences (ANAS); SSTC, Belarus; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ); Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Natural Sciences and Engineering Research Council of Canada (NSERC); Canada Foundation for Innovation; MOST; National Natural Science Foundation of China (NSFC); Ministry of Education, Youth & Sports - Czech Republic; MPO CR; Czech Republic Government; DNRF Danish Natural Science Research Council; Centre National de la Recherche Scientifique (CNRS); CEA-DRF/IRFU, France; Federal Ministry of Education & Research (BMBF); Max Planck Society; Greek Ministry of Development-GSRT; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; Istituto Nazionale di Fisica Nucleare (INFN); Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; CNRST, Morocco; NWO; RCN, Norway; Ministry of Science and Higher Education, Poland; NCN, Poland; Portuguese Foundation for Science and Technology; European Commission; MNE/IFA, Romania; Ministry of Education, Science & Technological Development, Serbia; MSSR, Slovakia; Slovenian Research Agency - Slovenia; MIZS, Slovenia; Spanish Government; Wallenberg Foundation, Sweden; Swiss National Science Foundation (SNSF); Ministry of Science and Technology, Taiwan; Ministry of Energy & Natural Resources - Turkey; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); National Science Foundation (NSF); BCKDF; CANARIE; Beijing Municipal Science & Technology Commission; COST, ERC; European Commission; Marie Sklodowska-Curie Actions, European Union; French National Research Agency (ANR); German Research Foundation (DFG); European Commission; Alexander von Humboldt Foundation; Thales Group; European Commission; Greek NSRF, Greece; German-Israeli Foundation for Scientific Research and Development; La Caixa Foundation; CERCA Programme Generalitat de Catalunya; PROMETEO; Generalitat Valenciana; Goran Gustafssons Stiftelse, Sweden; Royal Society of London; European Commission; Leverhulme Trust; NDGF (Denmark, Norway, Sweden); CCIN2P3 (France); KIT/GridKA (Germany); INFN-CNAF (Italy); NL-T1 (Netherlands), PIC (Spain); ASGC (Taiwan); RAL (UK); BNL (USA) 106
A search for pair production of bottom squarks in events with hadronically decaying t-leptons, b-tagged jets, and large missing transverse momentum is presented. The analyzed dataset is based on proton-proton collisions at root s = 13 TeV delivered by the Large Hadron Collider and recorded by the ATLAS detector from 2015 to 2018, and corresponds to an integrated luminosity of 139 fb(-1). The observed data are compatible with the expected Standard Model background. Results are interpreted in a simplified model where each bottom squark is assumed to decay into the second-lightest neutralino (chi) over tilde (0)(2) and a bottom quark, with (chi) over tilde (0)(2) decaying into a Higgs boson and the lightest neutralino (chi) over tilde1(0). The search focuses on final states where at least one Higgs boson decays into a pair of hadronically decaying t-leptons. This allows the acceptance and thus the sensitivity to be significantly improved relative to the previous results at low masses of the (chi) over tilde (0)(2), where bottom-squark masses up to 850 GeV are excluded at the 95% confidence level, assuming a mass difference of 130 GeV between (chi) over tilde (0)(2) and (chi) over tilde (0)(1). Model-independent upper limits are also set on the cross section of processes beyond the Standard Model.