Search for Higgs boson exotic decays into Lorentz-boosted light bosons in the four-τ final state at $$\sqrt{s}$$ = 13 with the ATLAS detector
Journal Article
·
· Physics Letters. B
A search for exotic decays of the Higgs boson into a pair of low-mass scalars that subsequently decay into τ-leptons, H → aa → τ+τ–τ+τ–, is presented. In models with Yukawa-like couplings, the decay to τ-leptons is favoured for light a-bosons, with mass in the range of 2mτ < ma < 2mb. Results are presented in the range of 4 GeV < ma < 15 GeV using the 140 fb–1 of proton–proton collisions at $$\sqrt{s}$$ = 13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider. This search focuses on the scenario where, for both di-τ pairs, one of the τ-leptons decays to hadrons and neutrinos, while the other decays to a muon and neutrinos. In this mass range, the a → τ+τ– is Lorentz-boosted and a dedicated muon removal technique is used to reconstruct the di-τ pairs.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of Colorado, Boulder, CO (United States)
- Sponsoring Organization:
- Agencia Estatal de Investigación; Agencia Nacional de Investigación y Desarrollo; Agencia Nacional de Promoción Científica y Tecnológica; Australian Research Council; Austrian Science Fund; Bundesministerium für Wissenschaft, Forschung und Wirtschaft; CERN; Canada Foundation for Innovation; Center for Advancing Research Impact in Society; Center for African Studies; Centre National pour la Recherche Scientifique et Technique; Conselho Nacional de Desenvolvimento Científico e Tecnológico; Danmarks Grundforskningsfond; Defence Science Institute; Duchenne Research Fund; Fundação de Amparo à Pesquisa do Estado de São Paulo; Fundação para a Ciência e a Tecnologia; Georgia Health Initiative; Institutul de Fizică Atomică; Irish Rugby Football Union; Israel Academy of Sciences and Humanities; Istituto Nazionale di Fisica Nucleare; Japan Society for the Promotion of Science; Marcus och Amalia Wallenbergs minnesfond; Ministerio de Ciencia, Innovación y Universidades; Ministerstvo Školství, Mládeže a Tělovýchovy; Ministerstwo Edukacji i Nauki; Ministry of Education, Culture, Sports, Science and Technology; Ministry of Science and Technology of the People's Republic of China; Multiple Sclerosis Scientific Research Foundation; National Natural Science Foundation of China; National Research Council Canada; National Research Foundation; National Science Foundation; National Science and Technology Council; Natural Sciences and Engineering Research Council of Canada; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; Science and Technology Facilities Council; Spine Education and Research Institute; U.S. Department of Energy; UK Research and Innovation; USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- The ATLAS Collaboration
- Grant/Contract Number:
- AC02-05CH11231; AC02-76SF00515; FG02-03ER41244
- OSTI ID:
- 3020358
- Alternate ID(s):
- OSTI ID: 3019475
- Journal Information:
- Physics Letters. B, Journal Name: Physics Letters. B Vol. 870; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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Reconstruction and identification of boosted di-τ systems in a search for Higgs boson pairs using 13 TeV proton-proton collision data in ATLAS
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