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Determination of the CP-violating weak phase γ from the decays B → D π

2000/09/30 by C. S. Kim, C.S. Kim, S. Oh +1 · 3 citations
Physics and Astronomy · #Calibration #Neutrino Physics Research #Particle physics theoretical and experimental studies #Phase (matter) #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #Standard uncertainty #Weak measurement #hep-ex #hep-ph

paper · pdf · doi:10.1007/s100520100725

published in The European Physical Journal C 21(3), 495-499 (Springer Science+Business Media) · 12 pages, 1 figure, LaTex; the version to be published in European Physical Journal C

arxiv created 2001/06/14 · openalex publication_date 2001/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We propose a new method to extract the CP violating weak phase γ (the phase of Vub^*) in the CKM paradigm of the Standard Model, using B- → D0 π- → f π- and B- → D0 π- → f π- decays, where f are final states such as K+ π-, K+ ρ-, K ππ, \it etc. We also study the experimental feasibility of our new method. With possibility of new phases in the CKM matrix, we re-examine some of the previously proposed methods to determine γ, and find that it would be in principle possible to identify γ and a new phase angle θ separately.

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