Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/76315
Título: | Search for New Phenomena in Final States with Two Leptons and One or No b-Tagged Jets at √s=13 TeV Using the ATLAS Detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Data: | 2021 |
Editora: | American Physical Society |
Revista: | Physical Review Letters |
Citação: | Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., . . . Collaboration, A. (2021). Search for New Phenomena in Final States with Two Leptons and One or No b-Tagged Jets at root S=13 TeV Using the ATLAS Detector. Physical Review Letters, 127(14). doi: 10.1103/PhysRevLett.127.141801 |
Resumo(s): | A search for new phenomena is presented in final states with two leptons and one or no b-tagged jets. The event selection requires the two leptons to have opposite charge, the same flavor (electrons or muons), and a large invariant mass. The analysis is based on the full run-2 proton-proton collision dataset recorded at a center-of-mass energy of √s=13 TeV by the ATLAS experiment at the LHC, corresponding to an integrated luminosity of 139 fb−1. No significant deviation from the expected background is observed in the data. Inspired by the B-meson decay anomalies, a four-fermion contact interaction between two quarks (b, s) and two leptons (ee or μμ) is used as a benchmark signal model, which is characterized by the energy scale and coupling, Λ and g∗, respectively. Contact interactions with Λ/g∗ lower than 2.0 (2.4) TeV are excluded for electrons (muons) at the 95% confidence level, still far below the value that is favored by the B-meson decay anomalies. Model-independent limits are set as a function of the minimum dilepton invariant mass, which allow the results to be reinterpreted in various signal scenarios. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/76315 |
DOI: | 10.1103/PhysRevLett.127.141801 |
ISSN: | 0031-9007 |
e-ISSN: | 1079-7114 |
Versão da editora: | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.141801 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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PhysRevLett.127.141801.pdf | 765,53 kB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons