Search for the rare decays and

Authors :: Aaij, R.
Adeva, B.
Adinolfi, M.
Adrover, C.
Affolder, A.
Ajaltouni, Z.
Albrecht, J.
Alessio, F.
Alexander, M.
Alvarez Cartelle, P.
Alves, A.A.
Amato, S.
Amhis, Y.
Amoraal, J.
Anderson, J.
Appleby, R.B.
Aquines Gutierrez, O.
Arrabito, L.
Artuso, M.
Aslanides, E.
Source :: Physics Letters B. May2011, Vol. 699 Issue 5, p330-340. 11p.
Publication Year :: 2011
Abstract: Abstract: A search for the decays and is performed with about of pp collisions at collected by the LHCb experiment at the Large Hadron Collider at CERN. The observed numbers of events are consistent with the background expectations. The resulting upper limits on the branching ratios are and at 95% confidence level. [Copyright &y& Elsevier]