Title
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Observation of and measurements of branching fractions of charmless two-body decays of and mesons in collisions at =1.96 TeV
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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 search for decays of the type B(s)0→h+h′- (where h,h′=K or π) in 180 pb-1 of p̅ p collisions collected at the Tevatron by the upgraded Collider Detector at Fermilab. We report the first observation of the new mode Bs0→K+K- with a yield of 236±32 events, corresponding to (fs/fd)×B(Bs0→K+K-)/B(B0→K+π-)=0.46±0.08(stat)±0.07(syst), where fs/fd is the ratio of production fractions of Bs0 and B0. We find results in agreement with world averages for the B0 modes, and set the following new limits at 90% C.L.: B(Bs0→K-π+)<5.6×10-6 and B(Bs0→π+π-)<1.7×10-6. |
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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.
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American Physical Society
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2006
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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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97
:21
(2006)
, p. 1-7
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Article Reference
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211802
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ISI
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000242219900009
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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