Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/32569
Título: | Observation of an Excited Bc+/- Meson State with the ATLAS Detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
Data: | 2014 |
Editora: | American Physical Society |
Revista: | Physical Review Letters |
Citação: | Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., . . . Zwalinski, L. (2014). Observation of an excited Bc± meson state with the ATLAS detector. Physical Review Letters, 113(21). doi: 10.1103/PhysRevLett.113.212004 |
Resumo(s): | A search for excited states of the B c meson is performed using 4.9 fb−1 of 7 TeV and 19.2 fb−1 of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decay B c → J=ψπ . The state appears in the mðB c πþπ−Þ − mðB c Þ − 2mðπ Þ mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842 4 5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the B c meson, B c ð2SÞ. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/32569 |
DOI: | 10.1103/PhysRevLett.113.212004 |
ISSN: | 0031-9007 |
Versão da editora: | http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.212004 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Observation of an Excited.pdf | 371,21 kB | Adobe PDF | Ver/Abrir |