Data samples corresponding to the isospin-violating decay D-s(*+)-> D(s)(+)pi(0) and the decays D-s(*+)-> D(s)(+)gamma, D-*0-> D(0)pi(0) and D-*0-> D(0)gamma 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: Gamma(D-s(*+)-> D(s)(+)pi(0))/Gamma(D-s(*+)-> D(s)(+)gamma)=0.062 +/- 0.005(stat.)+/- 0.006(syst.) and Gamma(D-*0-> D(0)pi(0))/Gamma(D-*0-> D(0)gamma)=1.74 +/- 0.02(stat.)+/- 0.13(syst.). Both measurements represent significant improvements over present world averages.

Measurement of the branching ratios Gamma(D-s(*+)-> D-s(+)pi(0))/Gamma(D-s(*+)-> D-s(+)gamma) and Gamma(D-*0 -> D-0 pi(0))/Gamma(D-*0 -> D-0 gamma)

FERRONI, Fernando
2005

Abstract

Data samples corresponding to the isospin-violating decay D-s(*+)-> D(s)(+)pi(0) and the decays D-s(*+)-> D(s)(+)gamma, D-*0-> D(0)pi(0) and D-*0-> D(0)gamma 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: Gamma(D-s(*+)-> D(s)(+)pi(0))/Gamma(D-s(*+)-> D(s)(+)gamma)=0.062 +/- 0.005(stat.)+/- 0.006(syst.) and Gamma(D-*0-> D(0)pi(0))/Gamma(D-*0-> D(0)gamma)=1.74 +/- 0.02(stat.)+/- 0.13(syst.). Both measurements represent significant improvements over present world averages.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/2478
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