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) RID C-2728-2008 RID C-5223-2009 RID C-5719-2008 RID D-1055-2009
LUSIANI, Alberto;
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.File in questo prodotto:
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