Light Mesons from Charm Meson Decays in FNAL E791

2002/08/29 by B. Meadows, Brian T. Meadows, Meadows, Brian T.
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0208049

4 pages, 2 figures, Moriond QCD conference, 2002

arxiv created 2002/08/29 · arxiv updated 2009/11/30

Abstract

An analysis of the Dalitz plots for the decays D⁺→ K^-π⁺π⁺ and D⁺→π^-π⁺π⁺ indicates that structure with significant phase variation is required in the s-wave K^-π⁺ and π^-π⁺ systems in the region below 1 GeV/c² effective mass. A constant, non resonant "contact" term, together with a simple s-wave Breit Wigner amplitude with M₀=797± 19± 43, Γ₀= 175± 12± 12 MeV/c² for the \Km\pip system and M₀=478⁺²⁴_-23± 17, Γ₀=324⁺⁴²_-40± 21 MeV/c² for the π^-π⁺ system provide good fits to the data in this region.

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