Observation of D+→KS0a0(980)+ in the Amplitude Analysis of D+→KS0π+η

DOI: 10.1103/physrevlett.132.131903 Publication Date: 2024-03-29T15:47:27Z
AUTHORS (634)
ABSTRACT
We perform for the first time an amplitude analysis of the decay D+→KS0π+η and report the observation of the decay D+→KS0a0(980)+ using 2.93  fb−1 of e+e− collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a0(980) pseudoscalar, D+→KS0a0(980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a0(980) and to study the final-state interactions. The absolute branching fraction of D+→KS0π+η is measured to be (1.27±0.04stat±0.03syst)%. The branching fractions of intermediate processes D+→KS0a0(980)+ with a0(980)+→π+η and D+→π+K¯0*(1430)0 with K¯0*(1430)0→KS0η are measured to be (1.33±0.05stat±0.04syst)% and (0.14±0.03stat±0.01syst)%, respectively. Published by the American Physical Society 2024
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (60)
CITATIONS (7)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....