Dalitz plot analysis of Ds+ and D+ decay to π+π−π+ using the K-matrix formalism

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

doi:10.1016/j.physletb.2004.01.065

Dalitz plot analysis of Ds+ and D+ decay to π+π−π+ using the K-matrix formalism

J M Link , A Zallo + Show 97 more

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https://doi.org/10.1016/j.physletb.2004.01.065

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Journal: Physics Letters B	Publication Date: Feb 26, 2004
Citations: 62

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

#K-matrix Formalism #K-matrix Approach + Show 8 more

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Abstract

FOCUS results from Dalitz plot analyses of D+s and D+ to π+π−π+ are presented. The K-matrix formalism is applied to charm decays for the first time, which allows us to fully exploit the already existing knowledge coming from light-meson spectroscopy experiments. In particular all the measured dynamics of the S-wave ππ scattering, characterized by broad/overlapping resonances and large non-resonant background, can be properly included. This Letter studies the extent to which the K-matrix approach is able to reproduce the observed Dalitz plot and thus help us to understand the underlying dynamics. The results are discussed along with their possible implications for the controversial σ meson.

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