Search for B 0 → (γ)νν̅ at Belle
| Autor: | Yu-Chieh Ku, 辜禹傑 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 We perform a study to search for the decays B 0 → ν ν̄ and B 0 → ν ν̄γ using a sample of 771 million B- B̄ pairs collected with the Belle detector on the Υ(4S) resonance at KEK e + e − collider. The two resonance signature is identified by fully reconstructing the accompanying B meson that decays hadronically and requiring no charged particles, neutral pions and neutral kaons in the signal side. The branching fraction upper limits at 90% confidence level is presented. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|