Amplitude analysis and branching fraction measurement of the decay Ds+ → π + π 0 π 0
Citation
Kalantar-Nayestanaki, N., Kappert, R., Kavatsyuk, M., Messchendorp, J., Rodin, V., & BESIII Collaboration. (2022). Amplitude analysis and branching fraction measurement of the decay Ds+→ π+ π 0 π 0. Journal of High Energy Physics, 2022(1), 52.Abstract
Using a data set corresponding to an integrated luminosity of 6.32 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 Ds+ → π+π0π0 is performed, and the relative fractions and phases of different intermediate processes are determined. The absolute branching fraction of the decay Ds+ → π+π0π0 is measured to be (0.50 ± 0.04stat ± 0.02syst)%. The absolute branching fraction of the intermediate process Ds+ → f0(980)π+, f0(980) → π0π0 is determined to be (0.28 ± 0.04stat ± 0.04syst)%. [Figure not available: see fulltext.] © 2022, The Author(s).
