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Paper IPM / Physic / 15004  


Abstract:  
In cold nuclear matter, the shifts in the mass and currentmeson coupling as well the vector self energy of the exotic X(3872) are calculated using the diquarkantidiquark current within the framework of the inmedium twopoint QCD sum rule. At the rest frame of the medium, the three momentum of the considered particle is fixed to remove the contributions of the particles with negative energy. In the calculations, we include the inmedium condensates of quarkquark, gluongluon and quarkgluon. It is observed that, the shift due to the nuclear matter is negative and is about 25% when the saturation density is used. Such shift is considerably large and comparable with the nucleon' mass shift due to the nuclear medium. The negative shift in the currentmeson coupling due to nuclear matter is approximately 10%. At the saturation density, the vector self energy of the exotic X(3872) state is found to be Σ_{υ}=1.31 GeV. It is shown that the mass, currentmeson coupling and vector self energy of X(3872) strongly depend on the density of cold nuclear matter.
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