2004/02/29 by Eric Braaten, Masaoki Kusunoki · 3 citations
Physics and Astronomy · #Annihilation #B meson #Branching fraction #Coalescence (physics) #Hadron #High-Energy Particle Collisions Research #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.69.114012
published as Phys.Rev.D69:114012,2004 · 10 pages, revtex4, 1 figure
openalex publication_date 2004/06/09 · arxiv created 2004/08/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
If the recently discovered charmonium state X(3870) is a loosely bound molecule of the charm mesons D0 and D*0 or D0 and D*0, it can be produced in e+e^\ensuremath- annihilation at the \ensuremathΥ(4S) resonance by the coalescence of charm mesons produced in the decays of B+ and B^\ensuremath- mesons. Remarkably, in the case of 2-body decays of the B mesons, the leading contribution to the coalescence probability depends only on the hadron masses and on the width and branching fractions of the B meson. As the binding energy Eb of the molecule goes to zero, the coalescence probability scales as Eb1/2log(Eb). Unfortunately, the coalescence probability is also suppressed by two powers of the ratio of the width to the mass of the B meson, and is therefore many orders of magnitude too small to be observed in current experiments at B factories.