Journal article

Measurement of the ratio B(B-->(DK-)-K-*0)/B(B--> D-*0 pi(-)) and of the CP asymmetry of B-->(DCP K)-K-*0- decays

B Aubert, R Barate, D Boutigny, F Couderc, Y Karyotakis, JP Lees, V Poireau, V Tisserand, A Zghiche, E Grauges-Pous, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu Show all

Physical Review D | AMER PHYSICAL SOC | Published : 2005

Abstract

We study the decays B → D* π and B → D* K , where the D* decays into D π , with the D reconstructed in the CP-even (CP+) eigenstates K K and π π and in the (non-CP) channels K π , K π π π , and K π π . Using a sample of about 123 × 10 BB̄ pairs, we measure the ratios of decay rates R* ≡ B(B → D* K )/B(B → D* π ) = 0.086 ± 0.0040(stat) (syst), and provide the first measurements of R* ≡ B(B → D* K )/B(B → D* π ) = 0.0086 ± 0.021(stat) ± 0.007(syst), and of the CP asymmetry A* ≡ B(B → D* K )-B(B → D* K )/B(B → D* K )+B(B → D* K ) = 0.10 ± 0.23(stat) (syst). © 2005 The American Physical Society. - 0 - - 0 - 0 0 0 0 - + - + - + - + + - - + 0 6 - 0 - - 0 - +0.0042 - 0 - ..

View full abstract

University of Melbourne Researchers