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First Observation of the Decay D_s^+ to proton anti-neutron

High Energy Physics - Experiment 2010-04-08 v2
Authors: CLEO Collaboration , S. B. Athar
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Abstract

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.

Keywords

$D_s^+$ decay proton anti-neutron charmed meson baryon-antibaryon final state branching fraction CLEO-c detector $e^+e^-$ collisions

Cite

@article{arxiv.0803.1118,
  title  = {First Observation of the Decay D_s^+ to proton anti-neutron},
  author = {CLEO Collaboration and S. B. Athar},
  journal= {arXiv preprint arXiv:0803.1118},
  year   = {2010}
}

Comments

7 pages, available through http://www.lns.cornell.edu/public/CLNS/, submitted to PRL Small changes following referee's suggestions

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