2003/12/31 by J. M. Link, P.M. Yager, J. C. Anjos +97 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1016/j.physletb.2004.02.017
published as Phys.Lett.B586:11-20,2004 · 15 pages, 4 figures. Submitted to Phys. Lett. B. Added preprint numbers
arxiv created 2004/01/09 · openalex publication_date 2004/03/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Using data from the FOCUS experiment we analyze the D + π − and D 0 π + invariant mass distributions. We measure the D 2 ∗0 mass M D 2 ∗0 =(2464.5±1.1±1.9) MeV /c 2 and width Γ D 2 ∗0 =(38.7±5.3±2.9) MeV /c 2 , and the D 2 ∗+ mass M D 2 ∗+ =(2467.6±1.5±0.76) MeV /c 2 and width Γ D 2 ∗+ =(34.1±6.5±4.2) MeV /c 2 . We find evidence for broad structures over background in both the neutral and charged final state. If each is interpreted as evidence for a single L =1, j q =1/2 excited charm meson resonance, the masses and widths are M 1/2 0 =(2407±21±35) MeV /c 2 , Γ 1/2 0 =(240±55±59) MeV /c 2 , and M 1/2 + =(2403±14±35) MeV /c 2 , Γ 1/2 + =(283±24±34) MeV /c 2 , respectively.