2010/06/30 by Igor Danilkin, I. V. Danilkin, Yu. A. Simonov · 4 citations
Physics and Astronomy · #Algorithm #Computer science #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevlett.105.102002
published as Phys.Rev.Lett.105:102002,2010 · 5 pages, 4 figures. Accepted for publication in Phys. Rev. Lett
arxiv created 2010/08/25 · openalex publication_date 2010/09/03 · arxiv updated 2014/11/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The dynamical mechanism of channel coupling with the decay channels is applied to the case of coupled charmonium--DD* states with JPC=1++. A pole analysis is done and the DD* production cross section is calculated in qualitative agreement with experiment. The sharp peak at the D0D0* threshold and flat background are shown to be due to Breit-Wigner resonance, shifted by channel coupling from the original position of 3954 MeV for the 23P1, QQ state. A similar analysis, applied to the n=2, 3P2, 1P1, 3P0, allows us to associate the first one with the observed Z(3930) J=2 and explains the destiny of 3P0.