Determining weak phases from theB→ππ,Kπdecays

2004/10/31 by Yeo-Yie Charng, Hsiang-nan Li · 3 citations
Mathematics · Physics and Astronomy · #Algorithm #Amplitude #Approx #Combinatorics #Computer science #Geometry #Lambda #Mathematics #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Symmetry (geometry) #Tree (set theory) #Unitarity #hep-ph

paper · pdf · doi:10.1103/physrevd.71.014036

published as Phys.Rev. D71 (2005) 014036 · 8 pages, no figure, more references were added

openalex publication_date 2005/01/27 · arxiv created 2005/02/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Recent data of two-body nonleptonic B meson decays allow a topological-amplitude analysis up to the O(\ensuremathλ²) accuracy, where \ensuremathλ denotes the Wolfenstein parameter. We find an exact solution from the B\ensuremath→\ensuremathπ\ensuremathπ data and an exact solution from the B\ensuremath→K\ensuremathπ data, which satisfy the approximate SU(3) flavor symmetry. These solutions indicate that the color-suppressed tree amplitude is large, all other amplitudes can be understood within the standard-model, and the weak phases \ensuremathφ₂\ensuremath≈90^o and \ensuremathφ₃\ensuremath≈60^o are consistent with the global unitarity triangle fit.

Citations

• Branching ratio andCPviolation ofB→ππdecays in the perturbative QCD approach
• Possibility of a large electroweak penguin contribution inB→Kπmodes
• Electroweak penguin diagrams and two-bodyBdecays
• Decays ofBmesons to two pseudoscalars in broken SU(3) symmetry
• Weak phases from topological-amplitude parametrization
• QCD factorization in B→πK, ππ decays and extraction of Wolfenstein parameters
• QCD Factorization forB→ππDecays: Strong Phases andCPViolation in the Heavy Quark Limit
• CP-Violation in the Renormalizable Theory of Weak Interaction
• QCD factorization for exclusive non-leptonic B-meson decays: general arguments and the case of heavy–light final states

Cited by

• Bsmixing and new physics in hadronicb→sq¯qtransitions
• Hadronic decays of B→a1(1260)b1(1235) in the perturbative QCD approach
• Fourth GenerationCPViolation Effects onB→Kπ,φK, andρKin Next-to-Leading-Order Perturbative QCD