Measurement of masses and widths of excited charm mesons [formula omitted] and evidence for broad states

J M Link ,D Menasce,S Barberis,M Rovere,C Pontoglio,C Göbel,S Bianco,M Hosack,C Uribe,G Gianini,A Sánchez-Hernández,H Park,M Reyes,E Casimiro,M Wang,E Luiggi,E Polycarpo,E Gottschalk,K Cho,L Benussi,C Riccardi,L Cinquini,L Agostino,M Dicorato,I Gaines,S Erba,F Vázquez,I Segoni,S Sala,L Edera,A Kryemadhi,G Boca,P Vitulo,L Moroni,G Chiodini,M Boschini,P Dini,D Engh,F Prelz,D Pantea,S Carrillo,M Giammarchi,P Inzani,M Bertani,G Alimonti,G Bonomi,J Wiss,E Cuautle,C Cawlfield,F Leveraro,A Zallo,M Mezzadri,G Liguori,Y Zhang,H Hernandez,R Kutschke,A Massafferri,D Pedrini,R Gardner,S Malvezzi,I Bediaga,T Handler,J Magnin,A Paris,P M Yager ,Michael Wahl ,A A Machado ,J S Kang ,J R Wilson ,P D’angelo ,A López ,F Fabbri ,J N Butler ,I M Pepe ,J M De Miranda ,D Lopes Pegna ,H Méndez ,Agustín Cobos Cerutti ,Vincenzo Arena ,J E Ramirez Vargas ,A M Rahimi ,P H Garbincius ,D Y Kim ,Y S Chung ,B O’reilly ,J W Kwak ,L Garren ,J C Anjos ,T F Davenport ,A C Dos Reis ,S P Ratti ,H W K Cheung ,K B Lee ,M M Merlo ,B R Ko ,J P Cumalat ,R E Mitchell ,A Kreymer ,P Kasper

doi:10.1016/j.physletb.2004.02.017

Measurement of masses and widths of excited charm mesons [formula omitted] and evidence for broad states

J M Link , D Menasce + Show 97 more

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https://doi.org/10.1016/j.physletb.2004.02.017

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Journal: Physics Letters B	Publication Date: Mar 5, 2004
Citations: 119	License type: cc-by

Affiliation: University of Milan, Vanderbilt University, Center for Research and Advanced Studies of the National Polytechnic Institute, Kyungpook National University, University of Puerto Rico-Mayaguez, University of Colorado Boulder, Fermilab, Indiana University, University of Illinois Urbana-Champaign, University of Tennessee at Knoxville

#Excited Charm Meson #Charged Final State + Show 8 more

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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/c2, and the D2∗+ mass MD2∗+=(2467.6±1.5±0.76)MeV/c2 and width ΓD2∗+=(34.1±6.5±4.2)MeV/c2. 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/c2, Γ1/20=(240±55±59)MeV/c2, and M1/2+=(2403±14±35)MeV/c2, Γ1/2+=(283±24±34)MeV/c2, respectively.

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