a0+(980)-resonance production in pp->dK+Kbar0 reactions close to threshold

Details a0+(980)-resonance production in pp->dK+Kbar0 reactions close to threshold a0+(980)-resonance production in pp->dK+Kbar0 reactions close to threshold

2003-04-28

arxiv.org/abs/nucl-ex/0304020v2

Phys.Rev.Lett. 91 (2003) 172304

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 4 figures; accepted by Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.91.172304

The reaction pp->d K+ Kbar0 has been investigated at an excess energy of Q=46 MeV above the (K+ Kbar0) threshold with ANKE at COSY-Juelich. From the detected coincident dK+ pairs about 1000 events with a missing Kbar0 were identified, corresponding to a total cross section of sigma(pp->d K+ Kbar0)=(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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