First Observation of the Decay B0->psi(2S)pi0

Abstract

We report a measurement of the $B^0\to \psi (2S){\pi }^0$ branching fraction based on the full ${\rm Y}(4S)$ data set of $772\times 10^6$ $B\bar{B}$ pairs collected by the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider. We obtain $B(B^0\to \psi (2S){\pi }^0)=(1.17\pm 0.17\text{(stat)}\pm 0.08\text{(syst)})\times 10^{-5}$. The result has a significance of 7.2 standard deviations and is the first observation of the decay $B^0\to \psi (2S){\pi }^0$.

arXiv comment16 pages, 2 figures, PRD(RC)

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Cited by in corpus (3)

• How to employ ${\bar{B}}_d^0\to J/\psi (\pi \eta ,\bar{K}K)$ decays to extract information on $\pi \eta$ scattering
• Branching ratios, $CP$ asymmetries and polarizations of $B\to \psi (2S)V$ decays
• Estimating the branching fraction for $B^0\to \psi (2S){\pi }^0$ decay