Evidence for the Charmless Annihilation Decay Mode B[subscript s][superscript 0]→π[superscript +]π[superscript -]
We search for annihilation decay modes of neutral b mesons into pairs of charmless charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 6 fb[superscript -1] of integrated luminosity, we obtain the first evidence for the B[subscript s][su...
| Autores principales: | , , |
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| Otros Autores: | |
| Formato: | Artículo |
| Lenguaje: | en_US |
| Publicado: |
American Physical Society
2012
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| Acceso en línea: | http://hdl.handle.net/1721.1/71688 https://orcid.org/0000-0002-6047-4211 |
| Sumario: | We search for annihilation decay modes of neutral b mesons into pairs of charmless charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 6 fb[superscript -1] of integrated luminosity, we obtain the first evidence for the B[subscript s][superscript 0]→π[superscript +]π[superscript -] decay, with a significance of 3.7σ, and a measured branching ratio B(B[subscript s][superscript 0]→π[superscript +]π[superscript -])=(0.57±0.15(stat)±0.10(syst))×10[superscript -6]. A search for the B[superscript 0]→K[superscript +]K[superscript -] mode in the same sample yields a significance of 2.0σ, and a central value estimate B(B[superscript 0]→K[superscript +]K[superscript -])=(0.23±0.10(stat)±0.10(syst))×10[superscript -6]. |
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