Search for neutral charmless B decays at LEP
A search for rare charmless decays of B<sup>0</sup><sub>d</sub> and B<sup>0</sup><sub>s</sub> mesons has been performed in the exclusive channels B<sup>0</sup><sub>d</sub>(s) →ηη<sup>0</sup>, B<sup>0</sup>...
Guardado en:
| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1995
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/80889 |
| Aporte de: |
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I19-R120-10915-80889 |
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dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
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SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Física L3 experiment large electron positron collider Higgs boson |
| spellingShingle |
Ciencias Exactas Física L3 experiment large electron positron collider Higgs boson Dova, María Teresa L3 Collaboration Search for neutral charmless B decays at LEP |
| topic_facet |
Ciencias Exactas Física L3 experiment large electron positron collider Higgs boson |
| description |
A search for rare charmless decays of B<sup>0</sup><sub>d</sub> and B<sup>0</sup><sub>s</sub> mesons has been performed in the exclusive channels B<sup>0</sup><sub>d</sub>(s) →ηη<sup>0</sup>, B<sup>0</sup><sub>d</sub>(s) →ηπ<sup>0</sup> and B<sup>0</sup><sub>d</sub>(s) →π<sup>0</sup>π<sup>0</sup>. The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set:
Br(B<sup>0</sup><sub>d</sub>→ηη) <4.1 x 10<sup>−4</sup>, Br(B<sup>0</sup><sub>s</sub> →ηη) < 1.5 x 10<sup>−3</sup>, Br(B<sup>0</sup><sub>d</sub>→ηπ<sup>0</sup>) < 2.5 x 10<sup>−4</sup>, Br(B<sup>0</sup><sub>s</sub>→ηπ<sup>0</sup>) < 1.0 x 10<sup>−3</sup>, Br(B<sup>0</sup><sub>d</sub>→π<sup>0</sup>π<sup>0</sup>) < 6.0 x 10<sup>−5</sup>, Br(B<sup>0</sup><sub>s</sub>→π<sup>0</sup>π<sup>0</sup>) < 2.1 x 10<sup>−4</sup>.
These are the first experimental limits on Bd0→ηη and on the Bs0 neutral charmless modes. |
| format |
Articulo Articulo |
| author |
Dova, María Teresa L3 Collaboration |
| author_facet |
Dova, María Teresa L3 Collaboration |
| author_sort |
Dova, María Teresa |
| title |
Search for neutral charmless B decays at LEP |
| title_short |
Search for neutral charmless B decays at LEP |
| title_full |
Search for neutral charmless B decays at LEP |
| title_fullStr |
Search for neutral charmless B decays at LEP |
| title_full_unstemmed |
Search for neutral charmless B decays at LEP |
| title_sort |
search for neutral charmless b decays at lep |
| publishDate |
1995 |
| url |
http://sedici.unlp.edu.ar/handle/10915/80889 |
| work_keys_str_mv |
AT dovamariateresa searchforneutralcharmlessbdecaysatlep AT l3collaboration searchforneutralcharmlessbdecaysatlep |
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Repositorios |
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1764820487846756352 |