Search for B0 → X(3872) γ at Belle experiment
碩士 === 國立臺灣大學 === 天文物理研究所 === 107 === We report the results of a search for the decay B0 → X(3872)(→ J/ψ π+ π−)γ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb^−1 and containing 772 × 10^6 BB ̄ pairs, collected with the Belle detector at the KEKB as...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | en_US |
| Published: |
2019
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/upj9y4 |
| Summary: | 碩士 === 國立臺灣大學 === 天文物理研究所 === 107 === We report the results of a search for the decay B0 → X(3872)(→ J/ψ π+ π−)γ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb^−1 and containing 772 × 10^6 BB ̄ pairs, collected with the Belle detector at the KEKB asymmetric-energy e+e- collider running at the Υ(4S) resonance energy. We find no evidence for a signal and place an upper limit of B(B0 → X(3872) γ) × B(X(3872) → J/ψ π+ π−) < 5.1 × 10^−7 at 90% confidence level.
|
|---|