Studies of D^+ -> {eta', eta, phi} e^+ nu_e

Details Studies of D^+ -> {eta', eta, phi} e^+ nu_e Studies of D^+ -> {eta', eta, phi} e^+ nu_e

2010-11-04

arxiv.org/abs/1011.1195v3

Phys.Rev.D84:032001,2011

Physics

High Energy Physics

High Energy Physics - Experiment

15 pages, 6 figures, available through http://www.lns.cornell.edu/public/CLNS/, submitted to PRD. Minor edits, added appendi

Scientific paper

10.1103/PhysRevD.84.032001

We report the first observation of the decay D^+ -> eta' e^+ nu_e in two analyses, which combined provide a branching fraction of B(D+ -> eta' e nu) = (2.16 +/- 0.53 +/- 0.07) x 10^{-4}. We also provide an improved measurement of B(D+ -> eta e nu) = (11.4 +/- 0.9 +/- 0.4) x 10^{-4}, provide the first form factor measurement, and set the improved upper limit B(D+ -> phi e nu) < 0.9 x 10^{-4} (90% C.L.).

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