Search for excited tau-leptons and leptoquarks in the final state with tau-leptons and jets in pp collisions at root s=13 TeV with the ATLAS detector

ATLAS Collaboration; J. R. Bensinger; C. Blocker; G. Sciolla

doi:10.1007/JHEP06(2023)199

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Search for excited tau-leptons and leptoquarks in the final state with tau-leptons and jets in pp collisions at root s=13 TeV with the ATLAS detector

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Search for excited tau-leptons and leptoquarks in the final state with tau-leptons and jets in pp collisions at root s=13 TeV with the ATLAS detector

ATLAS Collaboration, J. R. Bensinger, C. Blocker and G. Sciolla

Journal of high energy physics : JHEP, (6), 199

06/29/2023

DOI: https://doi.org/10.1007/JHEP06(2023)199

Abstract

Physics, Particles & Fields

Science & Technology

Physical Sciences

Physics

A search is reported for excited tau-leptons and leptoquarks in events with two hadronically decaying tau-leptons and two or more jets. The search uses proton-proton (pp) collision data at root s = 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 tau-lepton is assumed to be produced and to decay via a four-fermion contact interaction into an ordinary tau-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 tau-lepton. No excess over the background prediction is observed. Excited tau-leptons with masses below 2.8 TeV are excluded at 95% CL in scenarios with the contact interaction scale Lambda set to 10 TeV. At the extreme limit of model validity where Lambda is set equal to the excited tau-lepton mass, excited tau-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 tau-lepton equals 1. The analysis does not exploit flavour-tagging in the signal region.

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Title: Search for excited tau-leptons and leptoquarks in the final state with tau-leptons and jets in pp collisions at root s=13 TeV with the ATLAS detector
Creators: ATLAS Collaboration
J. R. Bensinger - Brandeis University
C. Blocker - Brandeis University
G. Sciolla - Brandeis University
Publication Details: Journal of high energy physics : JHEP, (6), 199
Publisher: Springer Nature
Number of pages: 46
Grant note: MSSR, Slovakia ANAS, Azerbaijan; Azerbaijan National Academy of Sciences (ANAS) FWF, Austria; Austrian Science Fund (FWF) NAWA, Poland; Polish National Agency for Academic Exchange (NAWA) PRIMUS 21/SCI/017; UNCE SCI/013 / Czech Republic; Czech Republic Government Benoziyo Center, Israel GSRI, Greece CAS, China; Chinese Academy of Sciences Wallenberg Foundation, Sweden IN2P3-CNRS, France; Centre National de la Recherche Scientifique (CNRS) Compute Canada, Canada NRC, Canada RCN, Norway MOST, China; Ministry of Science and Technology, China ERC, European Union; European Union (EU); European Research Council (ERC) RGC, China ANPCyT, Argentina; ANPCyT ANR, France; Agence Nationale de la Recherche (ANR) BMWFW, Austria SNSF, Switzerland; Swiss National Science Foundation (SNSF) MESTD, Serbia; Ministry of Education, Science & Technological Development, Serbia CNPq, Brazil; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) SRC, Sweden ARRS, Slovenia; Slovenian Research Agency - Slovenia Thales programme - EU-ESF, Greece; Thales Group MEYS CR, Czech Republic La Caixa Banking Foundation, Spain MEiN, Poland ERDF, European Union; European Union (EU); Marie Curie Actions NSERC, Canada; Natural Sciences and Engineering Research Council of Canada (NSERC) Herakleitos programme - EU-ESF, Greece MIZS, Slovenia Canton of Bern, Switzerland MPG, Germany; Max Planck Society BSF-NSF, Israel NCN, Poland MEXT, Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) DSI/NRF, South Africa NSFC, China; National Natural Science Foundation of China (NSFC) Investissements d'Avenir Labex, France; Agence Nationale de la Recherche (ANR) Investissements d'Avenir Idex , France; Agence Nationale de la Recherche (ANR) CERN JSPS, Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science CEA-DRF/IRFU, France Hong Kong SAR, China INFN, Italy; Istituto Nazionale di Fisica Nucleare (INFN) COST, European Union BMBF, Germany; Federal Ministry of Education & Research (BMBF) BCKDF, Canada DNRF, Denmark; National Research Foundation of Korea FCT, Portugal; Fundacao para a Ciencia e a Tecnologia (FCT) NSF, United States of America; National Science Foundation (NSF) Norwegian Financial Mechanism 2014-2021, Norway Goran Gustafssons Stiftelse, Sweden FAPESP, Brazil; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) MNE/IFA, Romania DNSRC, Denmark; Danish Natural Science Research Council Greek NSRF, Greece STFC, United Kingdom; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) Canton of Geneva, Switzerland Marie Skodowska-Curie Actions, European Union; European Union (EU); Marie Curie Actions CFI, Canada; Canada Foundation for Innovation ISF, Israel; Israel Science Foundation DFG , Germany; German Research Foundation (DFG) CERCA Programme Generalitat de Catalunya, Spain AvH Foundation, Germany; Alexander von Humboldt Foundation MICINN, Spain; Spanish Government NWO, Netherlands; Netherlands Organization for Scientific Research (NWO); Netherlands Government SRNSFG, Georgia ARC, Australia; Australian Research Council ANID, Chile HGF, Germany YerPhI, Armenia MOST, Taiwan; Ministry of Science and Technology, Taiwan CNRST, Morocco Minciencias, Colombia SERI, Switzerland TENMAK, Turkiye PROMETEO Programme Generalitat Valenciana, Spain CANARIE, Canada Royal Society, United Kingdom; Royal Society Leverhulme Trust, United Kingdom; Leverhulme Trust Aristeia programme - EU-ESF, Greece MINERVA, Israel Horizon 2020, European Union GenT Programme Generalitat Valenciana, Spain DOE, United States of America; United States Department of Energy (DOE)
Identifiers: 9924288386801921
Academic Unit: Martin A. Fisher School of Physics
Language: English
Resource Type: Journal article

Search for excited tau-leptons and leptoquarks in the final state with tau-leptons and jets in pp collisions at root s=13 TeV with the ATLAS detector

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