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Analysis of the neutral D-meson decay to a neutral kaon and two neutral pions

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Title: Analysis of the neutral D-meson decay to a neutral kaon and two neutral pions
Author(s): Lowrey, Norman A.
Director of Research: Selen, Mats A.
Doctoral Committee Chair(s): Gollin, George D.
Doctoral Committee Member(s): Selen, Mats A.; Willenbrock, Scott S.; Flynn, Peter; Asner, David
Department / Program: Physics
Discipline: Physics
Degree Granting Institution: University of Illinois at Urbana-Champaign
Degree: Ph.D.
Genre: Dissertation
Subject(s): decay D0 to K0S PI0 PI0 Dalitz Dalitz plot analysis rate branching ratio analysis
Abstract: This thesis presents a Dalitz plot analysis of D0 to K0S PI0 PI0 using the CLEO-c data set of 818 inverse picobarns of positron-electron collisions accumulated at center-of-mass energy 3.77 GeV. This corresponds to about 3 million D0-anti-D0 pairs from which we select 1260 tagged candidates with a background of roughly 6%. We find that S-wave features dominate the PI0 PI0 axis of the Dalitz plot, contributing about one-third of the total decay rate, while the K*(892) is the dominant K0S PI0 contribution. Using three tag modes and correcting for quantum correlations we determine that the D0 to K0S PI0 PI0 branching ratio is 1.059% with a statistical uncertainty of 0.049% and a systematic uncertainty of 0.050%.
Issue Date: 2010-05-19
URI: http://hdl.handle.net/2142/16045
Rights Information: Copyright 2010 Norman A. Lowrey
Date Available in IDEALS: 2010-05-19
Date Deposited: May 2010
 

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