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

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%.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2010

Author dc:creator

• Lowrey, Norman A.

Contributors dc:contributor

• Selen, Mats A.
• Gollin, George D.
• Willenbrock, Scott S.
• Flynn, Peter
• Asner, David

• decay
• D0 to K0S PI0 PI0
• Dalitz
• Dalitz plot analysis
• rate
• branching ratio analysis

Statement dc:rights

• Copyright 2010 Norman A. Lowrey

Language dc:language

en

Handle dc:identifier

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

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/16045