A search for the decays of the de92499">den">de"> meson to den">de"> is performed for the first time using a data sample corresponding to an integrated luminosity of 3.0 fb−1den">de"> collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. No signal is found and an upper limit, at 95% confidence level, is set, den">de"> in the kinematic region den">de">, pT(B)<20 GeV/cden">de"> and 2.0<y(B)<4.5den">de">, where Bden">de"> is the branching fraction and fcden">de"> (fuden">de">) is the fragmentation fraction of the b quark into a de893be37" title="Click to view the MathML source">Bc+den">de"> (B+den">de">) meson.
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