Measurement of the branching fraction

Authors :: Aaij, R.
Abellan Beteta, C.
Adeva, B.
Adinolfi, M.
Adrover, C.
Affolder, A.
Ajaltouni, Z.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Alkhazov, G.
Alvarez Cartelle, P.
Alves, A.A.
Amato, S.
Amhis, Y.
Anderson, J.
Appleby, R.B.
Aquines Gutierrez, O.
Archilli, F.
Source :: Physics Letters B. Jul2012, Vol. 713 Issue 3, p172-179. 8p.
Publication Year :: 2012
Abstract: Abstract: The branching fraction is measured in a data sample corresponding to of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the measurement from . The time-integrated branching fraction is measured to be . This is the most precise measurement to date. [Copyright &y& Elsevier]