Measurement of masses and widths of excited charm mesons D and evidence for broad states

Using data from the FOCUS experiment we analyze the D+π− and D0π+ invariant mass distributions. We measure the D∗0 mass M ∗0 = (2464.5 ± 1.1 ± 1.9) MeV/c2 and width Γ ∗0 = (38.7 ± 5.3 ± 2.9) MeV/c2, and the D∗+ mass\n2D2 D2 2\nMD∗+ = (2467.6 ± 1.5 ± 0.76) MeV/c2 and width ΓD∗+ = (34.1 ± 6.5 ± 4.2) MeV/c2. We find evidence for broad structures 22\nover background in both the neutral and charged final state. If each is interpreted as evidence for a single L = 1, jq = 1/2 excited charm meson resonance, the masses and widths are M0 = (2407 ± 21 ± 35) MeV/c2, Γ 0 = (240 ± 55 ± 59) MeV/c2, and\n1/2\nM+ = (2403 ± 14 ± 35) MeV/c2, Γ + = (283 ± 24 ± 34) MeV/c2, respectively.