First amplitude analysis of D+ → π+π0π0 finds branching fraction (4.84 ± 0.05 stat ± 0.05 syst) × 10^{-3} with ρ(770)+π0 dominant at (3.08 ± 0.15 ± 0.05) × 10^{-3}.
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Amplitude Analysis and Branching Fraction Measurement of $D^+ \to \pi^+\pi^0\pi^0$
First amplitude analysis of D+ → π+π0π0 finds branching fraction (4.84 ± 0.05 stat ± 0.05 syst) × 10^{-3} with ρ(770)+π0 dominant at (3.08 ± 0.15 ± 0.05) × 10^{-3}.