Results on ϕ2 from e+e- colliders

2013/07/30 by P. Vanhoefer, Vanhoefer, Pit
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · doi:10.48550/arxiv.1307.7921

openalex publication_date 2013/07/30 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28

Abstract

We present a summary of measurements sensitive to the CKM angle ϕ2 (α), performed by the BaBar and the Belle experiments which both collect BB pairs produced at the Υ(4S) resonance in asymmetric e+e- collisions. We discuss the decays B -> ππ, ρρ, a₁πand (ρπ)⁰. The CP asymmetries, branching fractions and polarizations obtained are used to constrain ϕ2.

Related

• Results for φ₁ and φ₂ from Belle
• Results on φ₂ from Belle
• Measurements of the CKM angle ϕ₁(β) at the B Factories
• Measurements of the CKM angle phi₁/beta from Belle and BaBar
• Measurement of alpha/phi2 in Bo --> pi pi, rho pi and rho rho