CKM γ phase from B → K ππ

2007/03/12 by Ignacio Bediaga, I. Bediaga, Bediaga, Ignacio +4
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0703131

4 pages, 2 figures. To appear in the proceedings of the 4th International Workshop on the CKM Unitarity Triangle, december 12-16 2006, Nagoya, Japan

arxiv created 2007/03/12 · openalex publication_date 2007/03/12 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

Abstract

We discuss a method to extract the CKM γ angle combining Dalitz plot analysis of B^± → K^± π⁺ π^- and untagged B⁰, B⁰ → K_s π⁺ π^-. The method also allows obtaining the ratio and phase difference between the \it tree and \it penguin contributions from B⁰ and B⁰ → K^*± π^∓ decays and direct CP asymmetry between B⁰ and B⁰. From Monte Carlo studies of 100K events for the neutral mesons, we show the possibility of measuring γ with a precision of ∼ 5^o.

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