Search for $B^0\to J/\psi \varphi$

Abstract

We report a search for the decay $B^0\to J/\psi \varphi$, using a sample of 657 $\times 10^6$ $B\bar{B}$ pairs collected with the Belle detector at the ${\rm Y}(4S)$ resonance. No statistically significant signal is found and an upper limit for the branching fraction is determined to be $\mathcal{B}(B^0\to J/\psi \varphi )<9.4\times 10^{-7}$ at 90% confidence level.

5 pages, 2 figures, 3 tables, submitted to PRD(RC)

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• Effective Lifetimes of $B_s$ Decays and their Constraints on the $B_s^0$-${\bar{B}}_s^0$ Mixing Parameters
• Anatomy of $B_{s,d}^0\to J/\psi f_0(980)$
• Study of B{+-,0} --> J/ψ K+ K- K{+-,0} and search for B0 --> J/ψ ϕ at BABAR
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