Using data from the FOCUS experiment we analyze the D+π - and D0π+ invariant mass distributions. We measure the D2*0 mass MD2 *0=(2464.5±1.1±1.9)MeV/c2 and width ΓD2*0=(38.7±5.3±2.9)MeV/c 2, and the D2*+ mass MD2 *+=(2467.6±1.5±0.76)MeV/c2 and width ΓD2*+=(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, jq=1/2 excited charm meson resonance, the masses and widths are M1/20=(2407±21±35)MeV/c 2, Γ1/20=(240±55±59)MeV/ c2, and M1/2+=(2403±14±35)MeV/ c2, Γ1/2+=(283±24±34)MeV/ c2, respectively.

Link, J., Yager, P., Anjos, J., Bediaga, I., Gobel, C., Machado, A., et al. (2004). Measurement of masses and widths of excited charm mesons D-2(*) and evidence for broad states. PHYSICS LETTERS. SECTION B, 586(1-2), 11-20 [10.1016/j.physletb.2004.02.017].

Measurement of masses and widths of excited charm mesons D-2(*) and evidence for broad states

Gianini G;
2004

Abstract

Using data from the FOCUS experiment we analyze the D+π - and D0π+ invariant mass distributions. We measure the D2*0 mass MD2 *0=(2464.5±1.1±1.9)MeV/c2 and width ΓD2*0=(38.7±5.3±2.9)MeV/c 2, and the D2*+ mass MD2 *+=(2467.6±1.5±0.76)MeV/c2 and width ΓD2*+=(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, jq=1/2 excited charm meson resonance, the masses and widths are M1/20=(2407±21±35)MeV/c 2, Γ1/20=(240±55±59)MeV/ c2, and M1/2+=(2403±14±35)MeV/ c2, Γ1/2+=(283±24±34)MeV/ c2, respectively.
Articolo in rivista - Articolo scientifico
article; mass; mathematical computing; measurement; meson; structure analysis
English
2004
586
1-2
11
20
none
Link, J., Yager, P., Anjos, J., Bediaga, I., Gobel, C., Machado, A., et al. (2004). Measurement of masses and widths of excited charm mesons D-2(*) and evidence for broad states. PHYSICS LETTERS. SECTION B, 586(1-2), 11-20 [10.1016/j.physletb.2004.02.017].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/455599
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