Constraints upon the CKM angle phi_2 (alpha) from Belle and BaBar

Abstract

The Belle and BaBar experiments have measured branching fractions and CP asymmetries in the charmless decay modes B0->pi+pi-, B0->rho+pi-/rho-pi+, and B0->rho+rho-. From these measurements, constraints upon the CKM angle phi_2 can be obtained. These constraints consistently indicate that phi_2 is around 100 degrees.

8 pages, 6 figures, 1 table, contribution to the 6th International Conference on Hyperons, Charm and Beauty Hadrons (BEACH 2004), Illinois Institute of Technology, 27 June - 3 July 2004. Final version with notation corrections

References in corpus (8)

• QCD factorization for B->PP and B->PV decays
• Rates, Polarizations, and Asymmetries in Charmless Vector-Vector B Meson Decays
• Observation of B+ -> rho+ rho0
• Observation of Large CP Violation and Evidence for Direct CP Violation in B0-->pi+pi- Decays
• Measurements of Branching Fractions and CP-Violating Asymmetries in B0 -> rho+- h-+ Decays
• Comment on extracting alpha from B -> rho rho
• Observation of the Decay B0 => rho+ rho- and Measurement of the Branching Fraction and Polarization
• Implications of CP Asymmetries in $B\to {\pi }^{+}{\pi }^{-}$