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https://hdl.handle.net/1822/31714| Título: | Flavour tagged time dependent angular analysis of the Bs→J/ψϕ decay and extraction of ΔΓ and the weak phase ϕs in ATLAS |
| Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
| Data: | 2014 |
| Editora: | American Physical Society |
| Revista: | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Citação: | Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., Abdinov, O., . . . Collaboration, A. (2014). Flavor tagged time-dependent angular analysis of the B-s(0) -> J/psi phi decay and extraction of Delta Gamma(s) and the weak phase phi(s) in ATLAS. Physical Review D, 90(5). doi: 10.1103/PhysRevD.90.052007 |
| Resumo(s): | A measurement of the Bs0→J/ψϕ decay parameters, updated to include flavor tagging is reported using 4.9 fb-1 of integrated luminosity collected by the ATLAS detector from s=7 TeV pp collisions recorded in 2011 at the LHC. The values measured for the physical parameters are ϕs=0.12±0.25(stat)±0.05(syst) radΔΓs=0.053±0.021(stat)±0.010(syst) ps-1Γs=0.677±0.007(stat)±0.004(syst) ps-1|A∥(0)|2=0.220±0.008(stat)±0.009(syst)|A0(0)|2=0.529±0.006(stat)±0.012(syst)δ⊥=3.89±0.47(stat)±0.11(syst) radwhere the parameter ΔΓs is constrained to be positive. The S-wave contribution was measured and found to be compatible with zero. Results for ϕs and ΔΓs are also presented as 68% and 95% likelihood contours, which show agreement with the Standard Model expectations. |
| Tipo: | Artigo |
| URI: | https://hdl.handle.net/1822/31714 |
| DOI: | 10.1103/PhysRevD.90.052007 |
| ISSN: | 1550-7998 |
| e-ISSN: | 1550-2368 |
| Arbitragem científica: | yes |
| Acesso: | Acesso aberto |
| Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| 1407.1796.pdf | 1,04 MB | Adobe PDF | Ver/Abrir |
