An amplitude analysis of the decay D0→KS0π0π0 is performed to determine the relative magnitudes and phases of different intermediate processes. The analysis uses e+e− collision data collected at the center-of-mass energy of 3.773 GeV by the BESIII detector corresponding to an integrated luminosity of 20.3 fb−1. The absolute branching fraction of D0→KS0π0π0 is measured to be (1.026 ± 0.008stat.± 0.009syst.)%. The dominant intermediate process is D0→K¯∗8920→KS0π0π0, with a branching fraction of (4.10 ± 0.10stat.± 0.07syst.) × 10−3.
Amplitude analysis and branching fraction measurement of the decay $$ {D}^0\to {K}_S^0{\pi}^0{\pi}^0 $$
Garzia, I.;Melendi, F. M.;
2026
Abstract
An amplitude analysis of the decay D0→KS0π0π0 is performed to determine the relative magnitudes and phases of different intermediate processes. The analysis uses e+e− collision data collected at the center-of-mass energy of 3.773 GeV by the BESIII detector corresponding to an integrated luminosity of 20.3 fb−1. The absolute branching fraction of D0→KS0π0π0 is measured to be (1.026 ± 0.008stat.± 0.009syst.)%. The dominant intermediate process is D0→K¯∗8920→KS0π0π0, with a branching fraction of (4.10 ± 0.10stat.± 0.07syst.) × 10−3.File in questo prodotto:
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