Hadronic matrix elements and the 0 mass difference

Research output: Contribution to journalArticle


We estimate the 0 electromagnetic mass difference within the 1/N expansion approach to hadronic matrix elements. Perturbative QCD and a truncated meson theory describe the high- and low-photon-loop-momentum contributions, respectively. The matching between these complementary pictures for strong interactions is discussed.


External organisations
  • Fermi National Accelerator Laboratory
  • Max Planck Institute for Astrophysic
  • Ludwig-Maximilian University of Munich
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Pages (from-to)1343-1346
Number of pages4
JournalPhysical Review Letters
Issue number12
Publication statusPublished - 1989 Jan 1
Publication categoryResearch
Externally publishedYes