Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/48825
Título: | Observation of a New X-b State in Radiative Transitions to Y(1S) and Y(2S) at ATLAS |
Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
Data: | 2012 |
Editora: | American Physical Society |
Revista: | Physical Review Letters |
Citação: | Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., . . . Collaboration, A. (2012). Observation of a New X-b State in Radiative Transitions to Y(1S) and Y(2S) at ATLAS. Physical Review Letters, 108(15). doi: 10.1103/PhysRevLett.108.152001 |
Resumo(s): | The χb(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider at √s=7 TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4 fb−1, these states are reconstructed through their radiative decays to Υ(1S,2S) with Υ→μ+μ−. In addition to the mass peaks corresponding to the decay modes χb(1P,2P)→Υ(1S)γ, a new structure centered at a mass of 10.530±0.005(stat)±0.009(syst) GeV is also observed, in both the Υ(1S)γ and Υ(2S)γ decay modes. This structure is interpreted as the χb(3P) system. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/48825 |
DOI: | 10.1103/PhysRevLett.108.152001 |
ISSN: | 0031-9007 |
e-ISSN: | 1079-7114 |
Versão da editora: | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.108.152001 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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PhysRevLett.108.152001.pdf | 367,69 kB | Adobe PDF | Ver/Abrir |