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 Copy

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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