University of Illinois Urbana-Champaign

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

Lowrey, Norman A.

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https://hdl.handle.net/2142/16045

Description

Title
Analysis of the neutral D-meson decay to a neutral kaon and two neutral pions
Author(s)
Lowrey, Norman A.
Issue Date
2010-05-19T18:33:14Z
Director of Research (if dissertation) or Advisor (if thesis)
Selen, Mats A.
Doctoral Committee Chair(s)
Gollin, George D.
Committee Member(s)
  • Selen, Mats A.
  • Willenbrock, Scott S.
  • Flynn, Peter
  • Asner, David
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(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%.
Graduation Semester
2010-5
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http://hdl.handle.net/2142/16045
Copyright and License Information
Copyright 2010 Norman A. Lowrey

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