“…In 2009, the CDF collaboration observed the X(4140) for the first time in the J/ψφ mass spectrum in the exclusive B + → J/ψ φK + decays in pp collisions with a statistical significance more than 3.8σ [1]. Then the X(4140) was confirmed by CDF, CMS, D0, LHCb collaborations [1,2,3,4,5,6,7].…”