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Study of the decay D (1285). -->. K/sup +/K/sup -/. pi. /sup 0/

Journal Article · · JETP Lett. (Engl. Transl.); (United States)
OSTI ID:6740988
The decay D(1285)..-->..K/sup +/K/sup -/..pi../sup 0/ has been studied. The invariant-mass distribution of the kaon pair has been found with a statistical base an order of magnitude better than in previous studies. Analysis of the differential spectrum dN/dm/sub K//sup +/K/sup -/ in the delta-dominance model shows that the delta(980) meson cannot be described as a Breit-Wigner resonance with a small width. The ''effective width'' of the delta meson at the point (s)/sup 1/2/ = 1 GeV/c/sup 2/ is GAMMA/sub delta/>180 MeV/c/sup 2/. This result indicates a strong coupling of the delta meson with hadrons.
Research Organization:
Institute of High-Energy Physics
OSTI ID:
6740988
Journal Information:
JETP Lett. (Engl. Transl.); (United States), Journal Name: JETP Lett. (Engl. Transl.); (United States) Vol. 39:2; ISSN JTPLA
Country of Publication:
United States
Language:
English