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Search for the decay B_s⁰to J/psiπ⁰ at Belle experiment
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arxiv 2311.12724 v4 pith:C6HENVJ3 submitted 2023-11-21 hep-ex
Search for the decay $B_s^0\to J/\psi\pi^0$ at Belle experiment
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abstract
We have analyzed 121.4 fb$^{-1}$ of data collected at the $\Upsilon(5S)$ resonance by the Belle experiment using the KEKB asymmetric-energy $e^+e^-$ collider to search for the decay $B_s^0\to J/\psi\pi^0$. We observe no signal and report an upper limit on the branching fraction $\mathcal{B}(B_s^0\to J/\psi\pi^0)$ of $1.21\times 10^{-5}$ at 90\% confidence level. This result is the most stringent, improving the previous bound by two orders of magnitude.
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