Using 482 pb-1 of data taken at sqrt(s)=4.009 GeV, we measure the branching fractions of the decays of D*—0 into D0pi0 and D0gamma to be B(D*0-->D0pi0)=(65.5±0.8±0.5)% and B(D*0-->’D0gamma)=(34.5±0.8±0.5)%, respectively, by assuming that the D*0 decays only into these two modes. The ratio of the two branching fractions is B(D*0-->D0pi0)/B(D*0-->D0gamma)=1.90±0.07±0.05, which is independent of the assumption made above. The first uncertainties are statistical and the second ones systematic. The precision is improved by a factor of 3 compared to the present world average values.

Precision measurement of the D*0 decay branching fractions

Garzia, I.;
2015

Abstract

Using 482 pb-1 of data taken at sqrt(s)=4.009 GeV, we measure the branching fractions of the decays of D*—0 into D0pi0 and D0gamma to be B(D*0-->D0pi0)=(65.5±0.8±0.5)% and B(D*0-->’D0gamma)=(34.5±0.8±0.5)%, respectively, by assuming that the D*0 decays only into these two modes. The ratio of the two branching fractions is B(D*0-->D0pi0)/B(D*0-->D0gamma)=1.90±0.07±0.05, which is independent of the assumption made above. The first uncertainties are statistical and the second ones systematic. The precision is improved by a factor of 3 compared to the present world average values.
2015
Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Baldini Ferroli, R.; B...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2378079
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