2006/05/31 by A. Dzyuba, V. Kleber, M. Büscher +28 · 10 citations
Mathematics · Physics and Astronomy · #Atomic physics #Dalitz plot #Deuterium #Geometry #High-Energy Particle Collisions Research #Invariant mass #Isovector #Mathematics #Meson #Nuclear physics #Nucleon #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Scalar (mathematics) #Scattering cross-section #hep-ph #nucl-ex
paper · pdf · doi:10.1140/epja/i2006-10087-7
published in The European Physical Journal A 29(2) (Springer Science+Business Media) · 7 pages, 6 figures; accepted for publication in Eur.Phys.J. A
openalex publication_date 2006/08/01 · arxiv created 2006/08/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The reaction pp -> d K+ K0-bar has been investigated at excess energies Q = 47.4 and 104.7 MeV above the K+ K0-bar threshold at COSY-Juelich. Coincident dK+ pairs were detected with the ANKE spectrometer, and events with a missing K0-bar invariant-mass subsequently identified. The joint analysis of invariant-mass and angular distributions reveals s-wave dominance between the two kaons, in conjunction with a p-wave between the deuteron and the kaon pair, i.e. K K-bar production via the a0+(980) channel. Integration of the differential distributions yields total cross sections of sigma(pp -> d K+ K0-bar) = (38 +/- 2(stat) +/- 14(syst)) nb and 190 +/- 4(stat) +/- 39(syst)) nb for the low and high Q values, respectively.