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.
2026
Null, Null; Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Ban, Y.; Bao, H. -R.; Batozs...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2634776
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