The Kπ and ππ S-wave amplitude from D-meson decays
Centro Brasileiro de Pesquisas Fısicas, 22290-180, Rio de Janeiro, RJ, Brazil
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Accepted: 30 November 2006
Published online: 9 March 2007
The issue of Kπ and ππ S-wave amplitude is addressed using decays of D-mesons. Model-independent measurements of the phases of the π + π + and K - π + S-wave amplitude from D +→π - π + π + and D +→K - π + π + decays are discussed. The result indicates a deviation from the phase of the K - π + S-wave amplitude obtained by scattering experiments. This could be interpreted as an indication of the presence of 3-body final-state interaction, or in other words, that the phases from production and scattering process cannot be directly compared.
PACS: 11.80.Et Partial-wave analysis – / 11.80.La Multiple scattering – / 13.30.Eg Hadronic decays – / 13.30.Ce Leptonic, semileptonic, and radiative decays –
© Società Italiana di Fisica and Springer-Verlag, 2007