Data samples corresponding to the isospin-violating decay Ds*+→Ds+π0 and the decays Ds*+→Ds+γ, D*0→D0π0 and D*0→D0γ are reconstructed using 90.4 fb-1 of data recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider. The following branching ratios are extracted: Γ(Ds*+→Ds+π0)/Γ(Ds*+→Ds+γ)=0.062±0.005(stat.)±0.006(syst.) and Γ(D*0→D0π0)/Γ(D*0→D0γ)=1.74±0.02(stat.)±0.13(syst.). Both measurements represent significant improvements over present world averages.
Measurement of the branching ratios Γ(Ds*+→Ds+π0)/Γ(Ds*+→Ds+γ) and Γ(D*0→D0π0)/Γ(D*0→D0γ)
SIMI, GABRIELE;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2005
Abstract
Data samples corresponding to the isospin-violating decay Ds*+→Ds+π0 and the decays Ds*+→Ds+γ, D*0→D0π0 and D*0→D0γ are reconstructed using 90.4 fb-1 of data recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider. The following branching ratios are extracted: Γ(Ds*+→Ds+π0)/Γ(Ds*+→Ds+γ)=0.062±0.005(stat.)±0.006(syst.) and Γ(D*0→D0π0)/Γ(D*0→D0γ)=1.74±0.02(stat.)±0.13(syst.). Both measurements represent significant improvements over present world averages.
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