Amplitude analysis of D⁰ → π⁺ π^- π⁺ π^- decays using CLEO-c data

2016/11/28 by P. d’Argent, d'Argent, Philippe, J. Benton +14
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1611.09253

openalex publication_date 2016/11/28 · openalex created_date 2022/10/06 · openalex updated_date 2026/07/28

Abstract

The resonant substructure of the decay D⁰ → π⁺ π^- π⁺ π^- is studied by performing a full five-dimensional amplitude analysis. Preliminary results based on data collected by the CLEO-c detector are presented. This is the largest dataset of D⁰ → π⁺ π^- π⁺ π^- decays analysed in this way to-date. The two most significant contributions are D⁰ → a₁(1260)⁺ π^- and D⁰ → ρ(770)⁰ρ(770)⁰. The line shape, mass and width of the a₁(1260) resonance are determined, and model-independent studies of the line shapes of several resonant contributions are preformed.

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