Abstract
In this article, we study the doubly heavy baryon states Ξ cc , Ω cc , Ξ bb and Ω bb in the nuclear matter using the QCD sum rules, and derive three coupled QCD sum rules for the masses, vector self-energies and pole residues. The predictions for the mass-shifts in the nuclear matter \(\Delta M_{\varXi_{cc}}=-1.11~\mbox{GeV}\), \(\Delta M_{\varOmega_{cc}}=-0.33~\mbox{GeV}\), \(\Delta M_{\varXi_{bb}}=-3.37~\mbox{GeV}\) and \(\Delta M_{\varOmega_{bb}}=-1.05~\mbox{GeV}\) can be confronted with experimental data in the future.
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This work is supported by National Natural Science Foundation, Grant Number 11075053, and the Fundamental Research Funds for the Central Universities.
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Wang, ZG. Analysis of the doubly heavy baryons in the nuclear matter with the QCD sum rules. Eur. Phys. J. C 72, 2099 (2012). https://doi.org/10.1140/epjc/s10052-012-2099-6
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DOI: https://doi.org/10.1140/epjc/s10052-012-2099-6