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Search for $B^0$ Decays to Invisible Final States ($+\gamma$) at Belle
- Source :
- Phys. Rev. D 102, 012003 (2020)
- Publication Year :
- 2020
-
Abstract
- We report searches for $B^0\to\rm{invisible}$ and $B^0\to\rm{invisible}+\gamma$ decays, where the energy of the photon is required to be larger than 0.5 GeV. These results are obtained from a $711\,{\rm fb}^{-1}$ data sample that contains $772 \times 10^6 B\bar{B}$ pairs and was collected near the $\Upsilon\,(4S)$ resonance with the Belle detector at the KEKB $e^+ e^-$ collider. We observe no significant signal for either decay and set upper limits on their branching fractions at $90\%$ confidence level of $\mathcal{B}\,(B^0\to\rm{invisible}) < 7.8\times10^{-5}$ and $\mathcal{B}\,(B^0\to\rm{invisible}+\gamma) < 1.6\times10^{-5}$.<br />Comment: submitted to Physical Review D
- Subjects :
- High Energy Physics - Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. D 102, 012003 (2020)
- Publication Type :
- Report
- Accession number :
- edsarx.2004.03826
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevD.102.012003