In-medium mass modifications of the $D_0$ and $B_0$ mesons with the QCD sum rules

Details In-medium mass modifications of the $D_0$ and $B_0$ mesons with the QCD sum rules In-medium mass modifications of the $D_0$ and $B_0$ mesons with the QCD sum rules

2011-07-29

arxiv.org/abs/1107.5889v3

Phys. Rev. C84 (2011) 048201

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 2 figures, minor revision

Scientific paper

10.1103/PhysRevC.84.048201

In this article, 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 $D_0N$ and $B_0N$ scattering lengths are about $1.1\,\rm{fm}$ and $4.1\,\rm{fm}$ respectively, the mass-shifts $\delta M_{D_0}=69\,\rm{MeV}$ and $\delta M_{B_0}=217\,\rm{MeV}$, and the $D_0N$ and $B_0N$ interactions are repulsive. The positive mass-shifts indicate that the decays of the higher charmonium states into the $D_0\bar{D}_0$ pair are suppressed.

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