Measurement of the B s 0→J/ψK S 0 branching fraction

The LHCb Collaboration

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The B s 0→J/ψK S 0 branching fraction is measured in a data sample corresponding to 0.41fb -1 of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin2β measurement from B 0→J/ψK S 0. The time-integrated branching fraction is measured to be B(B S 0→J/ψK S 0)=(1.83±0.28)×10 -5. This is the most precise measurement to date.

Original languageEnglish
Pages (from-to)172-179
Number of pages8
JournalPhysics Letters B
Issue number3
Publication statusPublished - 9 Jul 2012
Externally publishedYes

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