Direct CP Violation and Isospin Triangles of B->ππDecays

Details Direct CP Violation and Isospin Triangles of B->ππDecays Direct CP Violation and Isospin Triangles of B->ππDecays

2003-08-22

arxiv.org/abs/hep-ph/0308225v2

Phys.Rev. D68 (2003) 071301

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTex 9 pages (1 PS figure included). More discussions with new equations and references added. Accepted for publication in P

Scientific paper

10.1103/PhysRevD.68.071301

The recent observation of B^0_d->\pi^0\pi^0 and \bar{B}^0_d->\pi^0\pi^0 decay modes allows us to make a fresh isospin analysis of B->\pi\pi transitions. We find that current experimental data can impose some model-independent constraints on the parameter space of direct CP violation in B_d->\pi^+\pi^- and B_d->\pi^0\pi^0. Furthermore, we establish a direct relationship between the weak phase \alpha and the charge-averaged branching fractions and CP-violating asymmetries of B->\pi\pi decays.

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