2008/03/31 by Cheng-Wei Chiang, Michael Gronau, Jonathan L. Rosner
Mathematics · Physics and Astronomy · #Algorithm #Amplitude #Factorization #High-Energy Particle Collisions Research #Mathematics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ph
paper · pdf · doi:10.1016/j.physletb.2008.05.017
published as Phys.Lett.B664:169-173,2008 · 10 pages, 4 figures. Misprints in some exponents corrected; one experimental value and some discussion updated
arxiv created 2008/04/26 · openalex publication_date 2008/05/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study a relation between the weak phase γ and the rates and CP asymmetries of several Kπ decays of B+, B0, and Bs, emphasizing the impact of the latter measurements. Current data indicate large SU(3) breaking in the strong phases or failure of factorization (including its application to penguin amplitudes) in Kπ modes of B0 and Bs. SU(3) and factorization only remain approximately valid if the branching ratio for Bs→K−π+ exceeds its current value of (5.27±1.17)×10−6 by at least 42%, or if a parameter ξ describing ratios of form factors and decay constants is shifted from its nominal value by more than twice its estimated error.