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20082012201620202024051015
Abstract: (arXiv)
QCD sum rules for D and B mesons embedded in cold nuclear matter are evaluated. We quantify the mass splitting of D - D-bar and B - B-bar mesons as a function of the nuclear matter density/ extrapolated to saturation density it is in the order of 60 and 130 MeV driven essentially by the condensates , and . The genuine chiral condensate , amplified by heavy-quark masses, enters the Borel transformed sum rules for the mass splitting beyond linear density dependence. Including strange quark condensates reveals a umerically smaller and opposite effect for the Ds - Ds-bar mass splitting.
  • nuclear matter: density
  • D anti-D: mass difference
  • D/s
  • B anti-B: mass difference
  • quantum chromodynamics: sum rule
  • spectral representation: parametrization
  • Borel transformation
  • numerical calculations