In-medium mass modifications of the D0 and B0 mesons from QCD sum rules

In this Brief Report we calculate the in-medium mass modifications of the scalar mesons D-0 and B-0 using the QCD sum rules. In calculations we observe that the D0N and B0N scattering lengths are about 1.1 and 4.1 fm, respectively, the mass shifts delta M-D0 = 69 MeV and delta M-B0 = 217 MeV, and the D0N and B0N interactions are repulsive. The positive mass shifts indicate that the decays of the higher charmonium states into the D-0(D) over bar (0) pair are suppressed.