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We report a search for the charmless baryonic decay $B^0\to p\bar{p}\pi^0$with a data sample corresponding to an integrated luminosity of 711~$\rmfb^{-1}$ containing $(772\pm 10)\times 10^6$ $B^0\bar{B}^0$ pairs. The data wascollected by the Belle experiment running on the $\Upsilon(4S)$ resonance atthe KEKB $e^+e^-$ collider. We measure a branching fraction $\mathcal{B}(B^0\top\bar{p}\pi^0)= (5.0\pm1.8\pm0.6 )\times 10^{-7}$, where the first uncertaintyis statistical and the second is systematic. The signal has a significance of3.1 standard deviations and constitutes the first evidence for this decay mode.We also search for the intermediate two-body decays $B^{0}\to\Delta^+\bar{p}$and $B^0\to\bar{\Delta}^-p$, and set an upper limit on the branching fraction:$\mathcal{B}(B^0\to\Delta^+\bar{p})+\mathcal{B}(B^0\to\bar{\Delta}^-p)<1.6\times10^{-6}$ at 90%confidence level.

Evidence for the decay $B^0\to p\bar{p}\pi^0$