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Title
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First observation of and measurement of the ratio of branching fractions
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Author
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Institution/Organisation
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CDF Collaboration
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Abstract
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| A combined mass and particle identification fit is used to make the first observation of the decay B̅ s0→Ds±K∓ and measure the branching fraction of B̅ s0→Ds±K∓ relative to B̅ s0→Ds+π-. This analysis uses 1.2 fb-1 integrated luminosity of pp̅ collisions at √s=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron collider. We observe a B̅ s0→Ds±K∓ signal with a statistical significance of 8.1σ and measure B(B̅ s0→Ds±K∓)/B(B̅ s0→Ds+π-)=0.097±0.018(stat)±0.009(syst). |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y., 1958, currens
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Publication
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New York, N.Y.
:
American Physical Society
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2009
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ISSN
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0031-9007
[print]
1079-7114
[online]
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Volume/pages
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103
:19
(2009)
, p. 191802,1-191802,7
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ISI
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000271568200007
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Full text (Publisher's DOI)
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Full text (open access)
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