CLEO Collaboration, S. B. Athar
Published 2008-03-07, updated 2008-04-25Version 2
Using e^+e^- -> D_s^*+ D_s^- data collected near the peak D_s production energy, E_cm=4170 MeV, with the CLEO-c detector, we present the first observation of the decay D_s^+ -> proton anti-neutron. We measure a branching fraction B(D_s^+ -> p anti-n = (1.30 +- 0.36 +0.12 -0.16) x 10^-3. This is the first observation of a charmed meson decaying into a baryon-antibaryon final state.
Comments: 7 pages, available through http://www.lns.cornell.edu/public/CLNS/, submitted to PRL Small changes following referee's suggestions
Journal: Phys.Rev.Lett.100:181802,2008
Observation of J/psi --> 3 gamma
First Observation and Measurement of the Decay K+- -> pi+- e+ e- gamma
First Observation of the Decays $B^{0}\to D^{*-}p\bar{p}π^{+}$ and B^{0}\to D^{*-}p\bar{n}$
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