2025/10/21 by BESIII Collaboration, M. Ablikim, Ablikim, M. +789
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2510.18276
openalex publication_date 2025/10/21 · openalex created_date 2025/10/24 · openalex updated_date 2026/07/28
Using an e+e- sample of 20.3 \rm fb-1 collected at the center-of-mass energy √(s)= 3.773 GeV with the BESIII detector, we report measurements of several four-body hadronic decays of the D mesons. The absolute branching fractions are determined to be \mathcal B(D0→ K0S K+K-π0 )=( 18.4+2.6-2.5± 2.4)× 10-5, \mathcal B(D0→ K0S K0S K-π+ )=( 12.9+1.7-1.6± 2.5)× 10-5, \mathcal B(D0→ K0S K0S K+π-)=(5.7+1.2-1.1± 1.3)× 10-5, \mathcal B(D0→ K+K-K-π+ )=(17.4+1.8-1.7± 2.2)× 10-5, and \mathcal B(D+→ K0S K+K-π+)=(13.8+2.4-2.2± 2.5)× 10-5. Furthermore, significant ϕ signals are found in the decay channels involving K+K- pair, and the corresponding branching fractions are measured as \mathcal B(D0→ ϕK0Sπ0 )=( 22.7+5.4-5.1± 3.7)× 10-5, \mathcal B(D0→ ϕK-π+ )=(25.2+3.5-3.3± 4.6)× 10-5, \mathcal B(D+→ ϕK0Sπ+)=(16.5 +6.0-5.3± 2.6 )× 10-5. The branching fractions of D0→ K0S K+K-π0, D0→ ϕK0Sπ0, and D+→ ϕK0S π+ are measured for the first time, and those of D0→ K0S K0SK-π+, D0→ K0S K0SK+π-, D0→ K+K-K-π+, D0→ ϕK-π+, and D+→ K0S K+K-π+ are measured with improved precision. The first uncertainties are statistical and the second are systematic.