First Observation of the Decays $B^{0}\to D^{*-}p\bar{p}π^{+}$ and B^{0}\to D^{*-}p\bar{n}$

S. Anderson; CLEO Collaboration

doi:10.1103/physrevlett.86.2732

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arXiv · hep-ex/0009011

First Observation of the Decays $B^{0}\to D^{-}p\bar{p}π^{+}$ and B^{0}\to D^{-}p\bar{n}$

S. Anderson·CLEO Collaboration

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Abstract

We report the first observation of exclusive decays of the type B to D^* N anti-N X, where N is a nucleon. Using a sample of 9.7 times 10^{6} B-Bbar pairs collected with the CLEO detector operating at the Cornell Electron Storage Ring, we measure the branching fractions B(B^0 \to D^{*-} proton antiproton π^+) = ({6.5}^{+1.3}_{-1.2} +- 1.0) \times 10^{-4} and B(B^0 \to D^{*-} proton antineutron) = ({14.5}^{+3.4}_{-3.0} +- 2.7) times 10^{-4}. Antineutrons are identified by their annihilation in the CsI electromagnetic calorimeter.

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S. Anderson, CLEO Collaboration. 2000-09-05. First Observation of the Decays $B^{0}\to D^{*-}p\bar{p}π^{+}$ and B^{0}\to D^{*-}p\bar{n}$. https://doi.org/10.1103/physrevlett.86.2732

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