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Measurement of the B_s^0 to J/psi K_S^0 branching fraction

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)172-179
Number of pages8
JournalPhysics Letters B
Early online date4 May 2012
Publication statusPublished - 9 Jul 2012


The B0s→J/ψK0S 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 B0→J/ψK0S The time-integrated branching fraction is measured to be BF(B0s→J/ψK0S)=(1.83±0.28)×10−5. This is the most precise measurement to date.

ID: 3966091