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Final-state phases inB→Dπ,D*π,andDρdecays

2002/12/31 by Cheng-Wei Chiang, Jonathan L. Rosner · 31 citations
Engineering · Mathematics · Physics and Astronomy · #Algorithm #Amplitude #Charge (physics) #Combinatorics #Mathematics #Particle Accelerators and Free-Electron Lasers #Particle physics #Particle physics theoretical and experimental studies #Philosophy #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #State (computer science) #Zero (linguistics) #hep-ph

paper · pdf · doi:10.1103/physrevd.67.074013

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 67(7) (American Physical Society) · 16 pages, LaTeX, 3 figures, to be submitted to Phys. Rev. D. References added; comments on new experimental results and analysis

arxiv created 2003/01/08 · openalex publication_date 2003/04/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The final-state phases in B\ensuremath→D\ensuremathπ, D*\ensuremathπ, and D\ensuremathρ decays appear to follow a pattern similar to those in \stackrel\ensuremath→DK\ensuremathπ, K*\ensuremathπ, and K\ensuremathρ decays. Each set of processes is characterized by three charge states but only two independent amplitudes, so the amplitudes form triangles in the complex plane. For the first two sets the triangles appear to have nonzero area, while for the D\ensuremathρ or K\ensuremathρ decays the areas of the triangles are consistent with zero. Following an earlier discussion of this behavior for D decays, a similar analysis is performed for B decays, and the relative phases and magnitudes of contributing amplitudes are determined. The significance of recent results on B0\ensuremath→D(*)0K(*)0 is noted. Open theoretical and experimental questions are indicated.

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