2003/04/30 by V. Kleber, M. Buescher, M. Büscher +40
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.1103/physrevlett.91.172304
published as Phys.Rev.Lett. 91 (2003) 172304 · 4 pages, 4 figures; accepted by Phys. Rev. Lett
arxiv created 2003/10/06 · openalex publication_date 2003/10/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The reaction pp\ensuremath→dK+K0 has been investigated at an excess energy of Q=46 MeV above the K+K0 threshold with ANKE at the cooler synchrotron COSY-J"ulich. From the detected coincident dK+ pairs, about 1000 events with a missing K0 were identified, corresponding to a total cross section of \ensuremathσ(pp\ensuremath→dK+K0)=[38\ifmmode±\else\textpm\fi2(stat)\ifmmode±\else\textpm\fi14(syst)] nb. Invariant-mass and angular distributions have been jointly analyzed and reveal s-wave dominance between the two kaons, accompanied by a p wave between the deuteron and the kaon system. This is interpreted in terms of a0+(980)-resonance production.