@misc{10481/85173, year = {2023}, month = {6}, url = {https://hdl.handle.net/10481/85173}, abstract = {A search is reported for excited τ-leptons and leptoquarks in events with two hadronically decaying τ-leptons and two or more jets. The search uses proton-proton (pp) collision data at = 13 TeV recorded by the ATLAS experiment during the Run 2 of the Large Hadron Collider in 2015–2018. The total integrated luminosity is 139 fb−1. The excited τ-lepton is assumed to be produced and to decay via a four-fermion contact interaction into an ordinary τ-lepton and a quark-antiquark pair. The leptoquarks are assumed to be produced in pairs via the strong interaction, and each leptoquark is assumed to couple to a charm or lighter quark and a τ-lepton. No excess over the background prediction is observed. Excited τ-leptons with masses below 2.8 TeV are excluded at 95% CL in scenarios with the contact interaction scale Λ set to 10 TeV. At the extreme limit of model validity where Λ is set equal to the excited τ-lepton mass, excited τ-leptons with masses below 4.6 TeV are excluded. Leptoquarks with masses below 1.3 TeV are excluded at 95% CL if their branching ratio to a charm quark and a τ-lepton equals 1. The analysis does not exploit flavour-tagging in the signal region.}, organization = {ANPCyT}, organization = {YerPhI, Armenia}, organization = {Australian Research Council}, organization = {BMWFW, Austria}, organization = {Austrian Science Fund (FWF)}, organization = {Azerbaijan National Academy of Sciences (ANAS)}, organization = {Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ)}, organization = {Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)}, organization = {Natural Sciences and Engineering Research Council of Canada (NSERC)}, organization = {Canada Foundation for Innovation}, organization = {National Natural Science Foundation of China (NSFC)}, organization = {MEYS CR, Czech Republic}, organization = {National Research Foundation of Korea}, organization = {Danish Natural Science Research Council}, organization = {Centre National de la Recherche Scientifique (CNRS)}, organization = {CEA-DRF/IRFU, France}, organization = {Federal Ministry of Education & Research (BMBF)}, organization = {Max Planck Society}, organization = {Hong Kong SAR, China}, organization = {Israel Science Foundation}, organization = {Istituto Nazionale di Fisica Nucleare (INFN)}, organization = {Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)}, organization = {Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Japan Society for the Promotion of Science}, organization = {CNRST, Morocco}, organization = {RCN, Norway}, organization = {MEiN, Poland}, organization = {Fundacao para a Ciencia e a Tecnologia (FCT)}, organization = {MNE/IFA, Romania}, organization = {Ministry of Education, Science & Technological Development, Serbia}, organization = {MSSR, Slovakia}, organization = {Slovenian Research Agency - Slovenia}, organization = {MIZS, Slovenia}, organization = {Spanish Government}, organization = {Wallenberg Foundation, Sweden}, organization = {SERI, Switzerland}, organization = {Ministry of Science and Technology, Taiwan}, organization = {United States Department of Energy (DOE)}, organization = {National Science Foundation (NSF)}, organization = {BCKDF, Canada}, organization = {CANARIE, Canada}, organization = {Compute Canada, Canada}, organization = {Czech Republic Government PRIMUS 21/SCI/017 UNCE SCI/013}, organization = {COST, European Union}, organization = {European Union (EU) European Research Council (ERC)}, organization = {European Union (EU) Marie Curie Actions}, organization = {Horizon 2020, European Union}, organization = {European Union (EU) Marie Curie Actions}, organization = {Agence Nationale de la Recherche (ANR)}, organization = {German Research Foundation (DFG)}, organization = {Alexander von Humboldt Foundation}, organization = {Herakleitos programme - EU-ESF, Greece}, organization = {Thales Group}, organization = {Aristeia programme - EU-ESF, Greece}, organization = {Greek NSRF, Greece}, organization = {BSF-NSF, Israel}, organization = {MINERVA, Israel}, organization = {Norwegian Financial Mechanism 2014-2021, Norway}, organization = {NCN, Poland}, organization = {Polish National Agency for Academic Exchange (NAWA)}, organization = {La Caixa Banking Foundation, Spain}, organization = {CERCA Programme Generalitat de Catalunya, Spain}, organization = {PROMETEO Programme Generalitat Valenciana, Spain}, organization = {GenT Programme Generalitat Valenciana, Spain}, organization = {Goran Gustafssons Stiftelse, Sweden}, organization = {Royal Society}, organization = {Leverhulme Trust}, organization = {UK Research & Innovation (UKRI) Science & Technology Facilities Council (STFC)}, organization = {TENMAK, Turkiye}, organization = {Canton of Geneva, Switzerland}, organization = {Canton of Bern, Switzerland}, organization = {Swiss National Science Foundation (SNSF)}, organization = {SRC, Sweden}, organization = {DSI/NRF, South Africa}, organization = {Netherlands Organization for Scientific Research (NWO) Netherlands Government}, organization = {Benoziyo Center, Israel}, organization = {RGC, China}, organization = {GSRI, Greece}, organization = {HGF, Germany}, organization = {SRNSFG, Georgia}, organization = {Minciencias, Colombia}, organization = {Ministry of Science and Technology, China}, organization = {Chinese Academy of Sciences}, organization = {ANID, Chile}, organization = {CERN}, organization = {NRC, Canada}, publisher = {Springer Nature}, keywords = {Exotics}, keywords = {Hadron-Hadron Scattering}, title = {Search for excited τ-leptons and leptoquarks in the final state with τ-leptons and jets in pp collisions at = 13 TeV with the ATLAS detector}, doi = {10.1007/JHEP06(2023)199}, author = {Atlas Collaboration and Aguilar Saavedra, Juan Antonio and Rodríguez Chala, Mikael}, }