2001/11/30 by Rui Zhang, Yibing Ding, Yi-Bing Ding +3 · 2 citations
Chemistry · Physics and Astronomy · #Ansatz #Atomic physics #Bound state #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Crystallography #Hadron #Mathematical physics #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.65.096005
published as Phys.Rev.D65:096005,2002 · 23 pages, 1 figure, LaTeX
arxiv created 2002/03/27 · openalex publication_date 2002/04/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
This work investigates whether the observed 1^\ensuremath-+ exotic mesons are molecular states. We first use a potential model to calculate the spectra and lifetimes of the f0(980) and a0(980), taken to be loosely bound molecular states of KK, then apply the same scenario to the 1^\ensuremath-+ exotic states \ensuremathπ1(1400) and \ensuremathπ1(1600), assuming them to be \ensuremathπ\ensuremathη(1295) and \ensuremathπ\ensuremathη(1440) molecules, respectively. We derive the effective potential in the framework of field theory at the hadronic level. Our results indicate that the present data on \ensuremathπ1(1400) and \ensuremathπ1(1600) rule out the specific molecular ansatz. We show that the lifetime of a loosely bound heavy-light molecule with enough angular momentum is fully determined by the lifetimes of its constituent mesons.