a0+(980)-Resonance Production in ppdK+K¯0 Reactions Close to Threshold

V. Kleber et al.
Phys. Rev. Lett. 91, 172304 – Published 24 October 2003

Abstract

The reaction ppdK+K¯0 has been investigated at an excess energy of Q=46   MeV above the K+K¯0 threshold with ANKE at the cooler synchrotron COSY-Jülich. From the detected coincident dK+ pairs, about 1000 events with a missing K¯0 were identified, corresponding to a total cross section of σ(ppdK+K¯0)=[38±2(stat)±14(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.

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  • Received 6 May 2003

DOI:https://doi.org/10.1103/PhysRevLett.91.172304

©2003 American Physical Society

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Vol. 91, Iss. 17 — 24 October 2003

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