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Amplitude Analysis and Branching Fraction Measurement of D⁰rightarrow K^-π^+π⁰π⁰
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arxiv 1903.06316 v1 pith:TOYIV3GC submitted 2019-03-15 hep-ex
Amplitude Analysis and Branching Fraction Measurement of D⁰rightarrow K^-π^+π⁰π⁰
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Utilizing the dataset corresponding to an integrated luminosity of $2.93$ fb$^{-1}$ at $\sqrt{s}=3.773$ GeV collected by the BESIII detector, we report the first amplitude analysis and branching fraction measurement of the $D^0\rightarrow K^-\pi^+\pi^0\pi^0$ decay. We investigate the sub-structures and determine the relative fractions and the phases among the different intermediate processes. Our results are used to provide an accurate detection efficiency and allow measurement of ${\cal B}(D^0\rightarrow K^-\pi^+\pi^0\pi^0) \,=\, (8.86 \pm 0.13(\text{stat}) \pm 0.19(\text{syst}))\%$.
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