Analysis of Neutral D Meson Two-Body Decays to a Neutral Kaon and a Neutral Pion

Decays of neutral D mesons to final states containing K + π's could provide evidence for CP-violation from a source not accounted for in the Standard Model. Due to the interference between Cabibbo-favored and Cabibbo-suppressed transitions, a decay rate asymmetry of D0 → K0S π0 compared to D0 → K0Lπ0 has been predicted to be non-zero. If New Physics interferes in doubly Cabibbo-suppressed D decays, the measurement of this asymmetry would differ from the predicted value and may provide evidence for CP-violation beyond the CKM mechanism. I present an analysis method to measure this branching fraction asymmetry, R(D0) ≡ B(D0→K0S π0)−B(D0→K0L π0)/(B(D0→K0Sπ0)+B(D0→K0Lπ0)), utilizing e+e− → cc events in the Belle dataset.

Name thesis:degree_name

Doctor of Philosophy

Level thesis:degree_level

doctoral

Discipline thesis:degree_discipline

Physics

Department dc:contributor.department

Physics

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

2021

Author dc:creator

• Kimmel, Taylor Douglas Jr.

Chair dc:contributor.committeechair

• Piilonen, Leo E.

Committee members dc:contributor.committeemember

• Barnes, Edwin Fleming
• Minic, Djordje
• Mariani, Camillo

• Belle
• Particle Physics
• D Meson Decay
• CP Violation
• Charm Quarks

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Dc Identifier Other

vt_gsexam:32659

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/105001