scholarly journals Limit on the B0 to rho0rho0 Branching Fraction and Implications for the CKM Angle alpha

2005 ◽  
Author(s):  
B Aubert
Keyword(s):  
Branching Fraction ◽  
Angle Alpha ◽  
Ckm Angle Alpha ◽  
Ckm Angle

scholarly journals Constraints on the CKM angle α in the B → ρρ decays

2005 ◽  
Vol 20 (15) ◽  
pp. 3578-3580
Author(s):  
Haibo Li
Keyword(s):  
Decay Mode ◽  
Branching Fraction ◽  
Time Dependent ◽  
Penguin Contribution ◽  
Upper Limit ◽  
B Factory ◽  
Babar Detector ◽  
Asymmetry Parameters ◽  
Ckm Angle

Using a data sample of 122 million [Formula: see text] decays collected with BABAR detector at the PEP-II asymmetric B factory at SLAC, we measure the time-dependent-asymmetry parameters of the longitudinally polarized component in the B0 → ρ+ρ- decay as CL = -0.23 ± 0.24 ( stat ) ± 0.14 ( syst ) and SL = -0.19 ± 0.33 ( stat ) ± 0.11 ( syst ). The B0 → ρ0ρ0 decay mode is also searched for in a data sample of about 227 million [Formula: see text] pairs. No significant signal is observed, and an upper limit of 1.1 × 10-6 (90% C.L.) on the branching fraction is set. The penguin contribution to the CKM angle α uncertainty is measured to be 11°. All results are preliminary.

scholarly journals Measurement of the branching fraction for D0 → K−π+

1997 ◽  
Vol 403 (3-4) ◽  
pp. 367-376 ◽  
Author(s):  
R. Barate ◽  
D. Buskulic ◽  
D. Decamp ◽  
P. Ghez ◽  
C. Goy ◽  
...  
Keyword(s):  
Branching Fraction
Sign in / Sign up

Export Citation Format

Share Document