Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/39903| Título: | Search for the Xb and other hidden-beauty states in the π+π-ϒ{hooked}(1S) channel at ATLAS |
| Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
| Palavras-chave: | Flavor physics Experimental results |
| Data: | 2015 |
| Editora: | Elsevier 1 |
| Revista: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Citação: | Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., . . . Zwalinski, L. (2015). Search for the Xb and other hidden-beauty states in the π+π-ϒ{hooked}(1S) channel at ATLAS. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 740, 199-217. doi: 10.1016/j.physletb.2014.11.055 |
| Resumo(s): | This Letter presents a search for a hidden-beauty counterpart of the X(3872) in the mass ranges 10.05--10.31 GeV and 10.40--11.00 GeV, in the channel Xb→π+π−Υ(1S)(→μ+μ−), using 16.2 fb−1 of s√=8 TeV pp collision data collected by the ATLAS detector at the LHC. No evidence for new narrow states is found, and upper limits are set on the product of the Xb cross section and branching fraction, relative to those of the Υ(2S), at the 95% confidence level using the CLS approach. These limits range from 0.8% to 4.0%, depending on mass. For masses above 10.1 GeV, the expected upper limits from this analysis are the most restrictive to date. Searches for production of the Υ(13DJ), Υ(10860), and Υ(11020) states also reveal no significant signals. |
| Tipo: | Artigo |
| URI: | https://hdl.handle.net/1822/39903 |
| DOI: | 10.1016/j.physletb.2014.11.055 |
| ISSN: | 0370-2693 1873-2445 |
| Arbitragem científica: | yes |
| Acesso: | Acesso aberto |
| Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| Physics-Letters-B-740-(2015)-199–217.pdf | 1,42 MB | Adobe PDF | Ver/Abrir |
