2007/11/30 by Eric Braaten · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.77.034019
published as Phys.Rev.D77:034019,2008 · 12 pages
arxiv created 2008/02/17 · openalex publication_date 2008/02/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present an estimate of the partial width of X(3872) into pp under the assumption that it is a weakly bound hadronic molecule whose constituents are a superposition of the charm mesons D*0D0 and D0D*0. The pp partial width of X is therefore related to the cross section for pp\ensuremath→D*0D0 near the threshold. That cross section at an energy well above the threshold is estimated by scaling the measured cross section for pp\ensuremath→K^*\ensuremath-K+. It is extrapolated to the D*0D0 threshold by taking into account the threshold resonance in the 1++ channel. The resulting prediction for the pp partial width of X(3872) is proportional to the square root of its binding energy. For the current central value of the binding energy, the estimated partial width into pp is comparable to that of the P-wave charmonium state \ensuremathχc1.