"Multiple Dalitz Plot Analysis At Cleo-C " by Mackenzie Smith

Access Type

Open Access Dissertation

Date of Award

January 2015

Degree Type

Dissertation

Degree Name

Ph.D.

Department

Physics and Astronomy

First Advisor

David Cinabro

Abstract

Dalitz Plot analysis is a standard technique for the study of weak hadronic 3-body decays. This technique allows us to extract the relative amplitudes, phases, and fit fractions of the resonances that are the primary product of such decays. A Dalitz analysis is complicated by the presence of two or more interfering resonances that appear at the same place on the plot. In this analysis I attempt to resolve the $K^{0}_{s} a_{0}(980)^{0}$ and $K^{0}_{s} f_{0}(980)$ in the decay of $D^{0} \to K^{0}_{s} K^{+} K^{-}$. Using the $K^{0}_{s} a_{0}(980)^{0}$ resonance found in $D^{0} \to K^{0}_{s} \pi^{0} \eta$, I compare equating a resonance in an interfering decay channel with a non--interfering channel by fit fraction or amplitude. I use the 818 $pb^{-1}$ of CLEO-c data collected a $\psi(3770)$ energies to perform the Dalitz plot analysis of $D^{0} \to K^{0}_{s} \pi^{0} \eta$ and $D^{0} \to K^{0}_{s} K^{+} K^{-}$. I find large fractions from both $K^{0}_{s} a_{0}(980)^{0}$ and $K^{0}_{s} f_{0}(980)$ that destructively interfere to leave the $K^{0}_{s} \phi(1020)$ as the dominant resonance on the plot.

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