First measurements of the ϕ₃-sensitive decay B^± → D(K_{\rm S}⁰ π⁺ π^- π⁰) K^± with Belle

2019/10/13 by P. K. Resmi, Resmi, P. K.
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1910.05760

openalex publication_date 2019/10/13 · openalex created_date 2019/10/18 · openalex updated_date 2026/07/28

Abstract

The current experimental uncertainty on the CKM unitarity triangle angle ϕ₃ is significantly larger than that on the standard model prediction. A more precise measurement of ϕ₃ is crucial for testing the SM description of CP violation and probing for new physics effects. The precision can be improved by exploring new B and D decay modes. The first model-independent measurement of the CKM angle ϕ₃ using B^± → D(K_{\rm S}⁰ π⁺ π^- π⁰) K^± decays is presented here. The GGSZ method is used by binning the five-dimensional phase space of the D decay. This analysis uses the measurement of the average strong-phase differences across the phase space in D→ K_{\rm S}⁰ π⁺ π^- π⁰ decays from CLEO-c, as input. The results are obtained from the full Belle data set with an integrated luminosity of 711~fb^-1 collected at the Υ(4S) resonance.

Related

• Towards a measurement of ϕ₃
• Measurement of the CKM angle γ in B^± → D(→ K⁰_{\rm S} h^′+h^′-)h^± decays with a novel approach
• Study of the Suppressed Decays B^± → [K^∓ π^±]_D K^± and B^± → [K^∓ π^±]_D π^± at Belle
• Study of the Suppressed Decays B^± →[K^∓π^±]_DK^± at Belle
• A model-independent measurement of the CKM angle γ in the decays B^±→[K⁺K^-π⁺π^-]_D h^± and B^±→[π⁺π^-π⁺π^-]_D h^± (h = K, π)