  A search for the X(4140) state in B+ to J/psi phi K+ decays is performed with
0.37 fb-1 of pp collisions at sqrt(s)=7 TeV collected by the LHCb experiment.
No evidence for this state is found, in 2.4 sigma disagreement with a
measurement by CDF. An upper limit on its production rate is set, BR(B+ to
X(4140) K+) BR(X(4140) to J/psi phi) / BR(B+ to J/psi phi K+) < 0.07 at 90%
confidence level.
