Plots presented at CKM 2012

Reference

 Some of the plots below were presented in the following talk: Angle averages at B factories by K. Miyabayashi at CKM 2012 (Cincinatti, USA). This updates the results on α/φ2 angle prepared for Moriond 12, including the measurements of Belle for the B→ρ⁰ρ⁰ and B→ππ decays shown at CKM 2012. The Babar update of the B→ρπ analysis shown at the same conference is not included here.

Constraints on the angle α/ϕ2 from B→ππ

Constraint on α/ϕ2 from B→ππ compared to the prediction from the global CKM fit (not including the α-related measurements) α[fit]= (95.9+2.2-5.6)°.

The individual constraints are
• α[Belle,ππ]∈[85.0°,148.0°]
• α[Babar,ππ]=(77.0+32.2-6.6
• α[WA,ππ]=(87.1+17.5-7.8
to be compared with the ones obtained at Moriond 2012
• α[Belle,ππ]∈[68.0°,181.8°]
• α[Babar,ππ]=(77.0+32.2-6.6
• α[WA,ππ]=(92+12-11
 α, β, γconvention ϕ1, ϕ2, ϕ3convention eps png eps png
Isospin triangles in B→ππ and B→ππ. One notices that the first triangle is almost flat, contrary to the second. eps png eps png
Prediction for the CP asymmetries in B→π+π- compared to the Babar and Belle measurements, and the World Average. eps png

Constraints on the angle α/ϕ2 from B→ρρ

Constraints on α/ϕ2 from B→ρρ (BABAR, Belle and WA) compared to the prediction from the global CKM fit (not including the α-related measurements).

The indivdual constraints are
• α[Belle,ρρ]=(84±13) °
• α[Babar,ρρ]=(92.4±6.4) °
• α[WA,ρρ]=(89.9+5.4-5.3
to be compared with the ones obtained at Moriond 2012
• α[Belle,ρρ]=(84+14-15) °
• α[Babar,ρρ]=(92.4±6.4) °
• α[WA,ρρ]=(89.9+5.4-5.5
 α, β, γconvention ϕ1, ϕ2, ϕ3convention eps png eps png
Prediction for the branching ratio and longitudinal fraction of B→ρ0ρ0 compared to the Babar and Belle measurements. eps png eps png

Constraints on the angle α/ϕ2 from charmless B decays

Constraints on α/ϕ2 from the combination of B→ππ, ρπ, and ρρ for BABAR, Belle and WA, compared to the prediction from the global CKM fit (not including the α-related measurements).

The indivdual constraints are
• α[Belle,all]∈ [168.7°,180.5°]
• α[Babar,all]=(92.8+5.8-6.9) °
• α[WA,all]=(88.5+4.7-4.4
to be compared with the ones obtained at Moriond 2012
• α[Belle,all]=(173.4+5.8-6.3) °
• α[Babar,all]=(92.8+5.8-6.9
• α[WA,all]=(88.8+4.5-4.3
In the case of Belle, one notices that the standard peak emerges only at the 2 σ level.
 α, β, γconvention ϕ1, ϕ2, ϕ3convention eps png eps png
Constraints on α/ϕ2 from B→ππ, ρπ and ρρ (WA) compared to the prediction from the global CKM fit (not including the α-related measurements).
 α, β, γconvention ϕ1, ϕ2, ϕ3convention eps png eps png