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Title
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First observation of the decay and measurement of its branching ratio
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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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| We report the observation of the exclusive decay Bs0→Ds-Ds+ at the 7.5 standard deviation level using 355 pb-1 of data collected by the CDF II detector in pp̅ collisions at √s=1.96 TeV at the Fermilab Tevatron. We measure the relative branching ratio B(Bs0→Ds-Ds+)/B(B0→D-Ds+)=1.44-0.44+0.48. Using the world average value for B(B0→D-Ds+), we find B(Bs0→Ds-Ds+)=(9.4-4.2+4.4)×10-3. This provides a lower bound ΔΓsCP/Γs≥2B(Bs0→Ds-Ds+)>1.2×10-2 at 95% C.L. |
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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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2008
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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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100
:2
(2008)
, p. 021803,1-021803,7
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ISI
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000252471200019
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Full text (Publisher's DOI)
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Full text (open access)
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