TL;DR
This paper reports recent experimental measurements of hadronic charm decays, including branching ratios and Dalitz plot analyses, providing evidence for light scalar resonances sigma and kappa.
Contribution
It presents new measurements of charm decay branching ratios and Dalitz plot analyses that include evidence for light scalar mesons, advancing understanding of charm hadronic decays.
Findings
New D0 to K-K+K-pi+ branching ratio measurement
Dalitz plot fits reveal masses and widths of light resonances
Evidence for sigma and kappa scalar mesons
Abstract
Recent hadronic charm decay results from fixed-target experiments are presented. New measurements of the D0 to K-K+K-pi+ branching ratio are shown as are recent results from Dalitz plot fits to D+ to K-K+pi+, pi+pi-pi+, K-pi+pi+, K+pi-pi+ and D_s+ to pi+pi-pi+, K+pi-pi+. These fits include measurements of the masses and widths of several light resonances as well as strong evidence for the existence of two light scalar particles, the pipi resonance sigma and the Kpi resonance kappa.
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