Search for the decay Bs0 J/צ0 at Belle experiment
PHYSICAL REVIEW D(2024)
摘要
We have analyzed 121.4 fb-1 of data collected at the Gamma(5S) resonance by the Belle experiment using the KEKB asymmetric-energy e(+)e(-) collider to search for the decay B-s(0) -> J/psi pi(0). We observe no signal and report an upper limit on the branching fraction B(B-s(0) -> J/psi pi(0)) of 1.21 x 10(-5) at 90% confidence level. This result is the most stringent, improving the previous bound by 2 orders of magnitude.
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