QCD sum rules for ρ mesons in nuclear matter

  title={QCD sum rules for ρ mesons in nuclear matter},
  author={S. Mallik and A. Nyffeler},
  journal={Physical Review C},
  • S. Mallik, A. Nyffeler
  • Published 2001
  • Physics
  • Physical Review C
  • We investigate QCD sum rules for vector currents in the rho meson channel in the nuclear medium. For increased sensitivity, we subtract out the vacuum contributions. With a saturation scheme often considered in the literature, we find these ``subtracted'' sum rules to be unstable. It indicates the importance of other contributions neglected in the saturation scheme. These include more Landau singularities at low energy, additional operators in the medium, and possibly the in-medium width of the… CONTINUE READING


    Publications referenced by this paper.
    An Introduction To Quantum Field Theory
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