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https://hdl.handle.net/10316/109202
Título: | Search for heavy lepton resonances decaying to a Z boson and a lepton in pp collisions at s√=8 | Autor: | Santos, S. P. Amor dos Carvalho, J. Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Palavras-chave: | Hadron-Hadron Scattering | Data: | 2015 | Editora: | Springer Nature | Título da revista, periódico, livro ou evento: | Journal of High Energy Physics | Volume: | 2015 | Número: | 9 | Resumo: | A search for heavy leptons decaying to a Z boson and an electron or a muon is presented. The search is based on pp collision data taken at (Formula presented.) = 8 TeV by the ATLAS experiment at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 20.3 fb−1. Three high-transverse-momentum electrons or muons are selected, with two of them required to be consistent with originating from a Z boson decay. No significant excess above Standard Model background predictions is observed, and 95% confidence level limits on the production cross section of high-mass trilepton resonances are derived. The results are interpreted in the context of vector-like lepton and type-III seesaw models. For the vector-like lepton model, most heavy lepton mass values in the range 114–176 GeV are excluded. For the type-III seesaw model, most mass values in the range 100–468 GeV are excluded. | URI: | https://hdl.handle.net/10316/109202 | DOI: | 10.1007/JHEP09(2015)108 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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Search-for-heavy-lepton-resonances-decaying-to-a-Z-boson-and-a-lepton-in-pp-collisions-at-s8Journal-of-High-Energy-Physics.pdf | 993.24 kB | Adobe PDF | Ver/Abrir |
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