ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2014, vol. 89, p. -
Amplitude analysis of the D+→ KS0 π+π0 Dalitz plot
We perform an analysis of the D+→KS0π+π0 Dalitz plot using a data set of 2.92fb-1 of e+e- collisions at the ψ(3770) mass accumulated by the BESIII experiment, in which 166694 candidate events are selected with a background of 15.1%. The Dalitz plot is found to be well represented by a combination of six quasi-two-body decay channels [KS0ρ+, KS0ρ(1450)+, K̄*0π+, K̄0(1430)0π+, K̄(1680)0π+, κ̄0π+] plus a small nonresonant component. Using the fit fractions from this analysis, partial branching ratios are updated with higher precision than previous measurements. © 2014 American Physical Society.