ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2008, vol. 100, p. -
Observation of the ψ(4415)→DD̄2*(2460) decay using initial-state radiation
We report measurements of the exclusive cross section for e+e-→D0D-π+ over the center-of-mass energy range 4.0 GeV to 5.0 GeV with initial-state radiation and the first observation of the decay ψ(4415)→D0D-π+. From a study of the resonant substructure in ψ(4415) decay we conclude that the ψ(4415)→D0D-π+ decay is dominated by ψ(4415)→DD̄2*(2460). We obtain B(ψ(4415)→D0D-πnonresonant+)/B(ψ(4415)→DD̄ 2*(2460)→D0D-π+)<0.22 at 90% C.L. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 673fb-1. © 2008 The American Physical Society.