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Observation of a new Bs π state
<!--HTML--><p>We report the observation of a narrow structure, X(5568), in the decay sequence X(5568) → B<sub>s</sub> π<sup>±</sup>, B<sub>s</sub> → J/ψ ϕ, J/ψ → μ<sup>+</sup&...
| Autor principal: | |
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| Lenguaje: | eng |
| Publicado: |
2016
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/2147455 |
| _version_ | 1780950401593376768 |
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| author | Drutskoy, Alexey |
| author_facet | Drutskoy, Alexey |
| author_sort | Drutskoy, Alexey |
| collection | CERN |
| description | <!--HTML--><p>We report the observation of a narrow structure, X(5568), in the decay sequence X(5568) → B<sub>s</sub> π<sup>±</sup>, B<sub>s</sub> → J/ψ ϕ, J/ψ → μ<sup>+</sup>μ<sup>−</sup>, ϕ → K<sup>+</sup>K<sup>−</sup>. This is the first observation of a hadronic state with valence quarks of four different flavors. The mass and natural width of the new state are measured to be m = 5567.8 ± 2.9 (stat) +0.9−1.9 (syst) MeV and Γ = 21.9 ± 6.4 (stat) +5.0−2.5 (syst) MeV, and the significance including look-elsewhere effect and systematic uncertainties is 5.1σ. The observation is based on10.4 fb<sup>−1</sup> of ppbar collision data at 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.</p> |
| id | cern-2147455 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2016 |
| record_format | invenio |
| spelling | cern-21474552022-11-02T22:31:28Zhttp://cds.cern.ch/record/2147455engDrutskoy, AlexeyObservation of a new Bs π stateObservation of a new Bs π stateEP Seminar<!--HTML--><p>We report the observation of a narrow structure, X(5568), in the decay sequence X(5568) → B<sub>s</sub> π<sup>±</sup>, B<sub>s</sub> → J/ψ ϕ, J/ψ → μ<sup>+</sup>μ<sup>−</sup>, ϕ → K<sup>+</sup>K<sup>−</sup>. This is the first observation of a hadronic state with valence quarks of four different flavors. The mass and natural width of the new state are measured to be m = 5567.8 ± 2.9 (stat) +0.9−1.9 (syst) MeV and Γ = 21.9 ± 6.4 (stat) +5.0−2.5 (syst) MeV, and the significance including look-elsewhere effect and systematic uncertainties is 5.1σ. The observation is based on10.4 fb<sup>−1</sup> of ppbar collision data at 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.</p>oai:cds.cern.ch:21474552016 |
| spellingShingle | EP Seminar Drutskoy, Alexey Observation of a new Bs π state |
| title | Observation of a new Bs π state |
| title_full | Observation of a new Bs π state |
| title_fullStr | Observation of a new Bs π state |
| title_full_unstemmed | Observation of a new Bs π state |
| title_short | Observation of a new Bs π state |
| title_sort | observation of a new bs π state |
| topic | EP Seminar |
| url | http://cds.cern.ch/record/2147455 |
| work_keys_str_mv | AT drutskoyalexey observationofanewbspstate |