2009/07/31 by P. G. Ortega, J. Segovia, D. R. Entem +1 · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1103/physrevd.81.0054023
published as Phys.Rev.D81:0054023,2010 · 10 pages, 3 figures. Direct comparison with Belle and Babar data has been included.
arxiv created 2010/03/24 · arxiv updated 2015/03/13
We have performed a coupled channel calculation of the 1++ c c sector including q q and DD^* molecular configurations. The calculation was done within a constituent quark model which successfully describes the meson spectrum, in particular the c c 1-- sector. Two and four quark configurations are coupled using the 3P0 model. The elusive X(3872) meson appears as a new state with a high probability for the DD^* molecular component. When the mass difference between neutral and charged states is included a large D0 D^*0 component is found which dominates for large distances and breaks isospin symmetry in the physical state. The original c c(2 3P1) state acquires a sizable DD^* component and can be identified with the X(3940). We study the B→ K π+ π-J/ψ and B→ K D0 D*0 decays finding a good agreement with Belle and BaBar experimental data.