Applying QCD sum rules and effective field theory to the D-K-anti K system

por Alberto Martinez (Universidade de Sao Paulo, Brasil)

miércoles 26 sept. 2012 16:00 → 17:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

A D-meson resonance with mass around 2.9 GeV has been found in the D-K-anti K system using two independent and different model calculations based on: (1) Quantum Chromodynamics (QCD) sum rules and (2) solution of Fadeev equations with input interactions obtained from effective field theories built by considering both chiral and heavy quark symmetries as the systems involved consist of heavy-light mesons. The striking similarity between the results obtained in the two different models indicates strongly towards the existence of a D meson with a mass nearly 2.9 GeV.