Observation of D^+ to eta e^+ nu_e

Details Observation of D^+ to eta e^+ nu_e Observation of D^+ to eta e^+ nu_e

2008-02-28

arxiv.org/abs/0802.4222v2

Phys.Rev.Lett.102:081801,2009

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, available through http://www.lns.cornell.edu/public/CLNS/

Scientific paper

10.1103/PhysRevLett.102.081801

Using a 281 pb^-1 data sample collected at the psi(3770) resonance with the
CLEO-c detector at the Cornell Electron Storage Ring, we report the first
observation of D^+ to eta e^+ nu_e. We also set upper limits for D^+ to eta'
e^+ nu_e and D^+ to phi e^+ nu_e that are about two orders of magnitude more
restrictive than those obtained by previous experiments.

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