Search for the X(4140) state in B+ -> J/psi phi K+ decays - Aaij, R; Beteta, C; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Alkhazov, G; Cartelle, P; et al. (Physical Review D, 2012)