Amplitude analysis and branching fraction measurement of the decay $D_{s}^{+} \to π^{+}π^{0}π^{0}$
Creators: name: BESIII Collaboration
name: Ablikim, M.
name: Achasov, M. N.
name: Adlarson, P.
name: Ahmed, S.
name: Albrecht, M.
name: Aliberti, R.
name: Amoroso, A.
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name: Ferroli, R. Baldini
name: Balossino, I.
name: Ban, Y.
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name: Berger, N.
name: Bertani, M.
name: Bettoni, D.
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name: Bloms, J.
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name: Brueggemann, A.
name: Cai, H.
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name: Calcaterra, A.
name: Cao, G. F.
name: Cao, N.
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name: Chang, J. F.
name: Chang, W. L.
name: Chelkov, G.
name: Chen, G.
name: Chen, H. S.
name: Chen, M. L.
name: Chen, S. J.
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name: Chen, Y. B.
name: Chen, Z. J.
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name: Cibinetto, G.
name: Cossio, F.
name: Dai, H. L.
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name: Dedovich, D.
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name: De Mori, F.
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name: Fan, Y. L.
name: Fang, J.
name: Fang, S. S.
name: Fang, Y.
name: Farinelli, R.
name: Fava, L.
name: Feldbauer, F.
name: Felici, G.
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name: Feng, J. H.
name: Fritsch, M.
name: Fu, C. D.
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name: Gao, Ya
name: Gao, Yang
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name: Gilman, A
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name: Harris, F. A.
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name: Zhu, J.
name: Zhu, K.
name: Zhu, K. J.
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Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Using a data set corresponding to an integrated luminosity of 6.32~$\rm fb^{-1}$ recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226~GeV, an amplitude analysis of the decay $D_{s}^{+} \to π^{+}π^{0}π^{0}$ is performed, and the relative fractions and phases of different intermediate processes are determined. The absolute branching fraction of the decay $D_{s}^{+} \to π^{+}π^{0}π^{0}$ is measured to be $(0.50\pm 0.04_{\text{stat}}\pm 0.02_{\text{syst}})\%$. The absolute branching fraction of the intermediate process $D_{s}^{+} \to f_0(980)π^{+}, f_0(980)\toπ^{0}π^{0}$ is determined to be $(0.21\pm 0.03_{\text{stat}}\pm 0.03_{\text{syst}})\%$.