• Accepted Paper

Measurements of absolute branching fractions of D0(+)→KKKπ decays

M. Ablikim et al.

Phys. Rev. D - Accepted 21 August, 2026

DOI: https://doi.org/10.1103/pwtz-p7vb

Abstract

Using an e+e− sample of $20.3\,\rm fb^{-1}$ collected at a center-of-mass energy s= 3.773 GeV with the BESIII detector, we report measurements of several four-body hadronic decays of D mesons. All studied decay modes are dominated by Cabibbo-favoured amplitudes. The absolute branching fractions are determined to be ℬ(D0→KS0KS0KS0π0)=(7.8−2.0+2.3±1.5)×10−5, ℬ(D0→KS0K+K−π0)=(18.4−2.5+2.6±2.4)×10−5, ℬ(D0→KS0KS0K−π+)=(12.9−1.6+1.7±1.3)×10−5, ℬ(D0→KS0KS0K+π−)=(5.7−1.1+1.2±1.0)×10−5, ℬ(D0→K+K−K−π+)=(17.4−1.7+1.8±2.2)×10−5, ℬ(D+→KS0KS0KS0π+)=(6.0−1.7+2.1±1.6)×10−5, and ℬ(D+→KS0K+K−π+)=(13.8−2.2+2.4±2.5)×10−5. Furthermore, significant ϕ signals are found in the decay channels involving a K+K− pair, and their fractions are determined as ℬ(D0→ϕKS0π0)/ℬ(D0→KS0K+K−π0)=(61−14+15±10)%, ℬ(D0→ϕK−π+)/ℬ(D0→K+K−K−π+)=(71−10+10±13)%, and ℬ(D+→ϕKS0π+)/ℬ(D+→KS0K+K−π+)=(59−19+22±9)%. The branching fractions of D0→KS0KS0KS0π0, D0→KS0K+K−π0, and D+→KS0KS0KS0π+ are measured for the first time, and those of D0→KS0KS0K−π+, D0→KS0KS0K+π−, D0→K+K−K−π+, D0→ϕK−π+, and D+→KS0K+K−π+ are measured with improved precision. The first uncertainties are statistical and the second are systematic.

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