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arxiv: 1011.1195 · v3 · pith:5AFNDUXGnew · submitted 2010-11-04 · ✦ hep-ex

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

CLEO Collaboration: J. Yelton , P. Rubin , N. Lowrey , S. Mehrabyan , M. Selen , J. Wiss , M. Kornicer , R. E. Mitchell
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M. R. Shepherd C. M. Tarbert D. Besson T. K. Pedlar J. Xavier D. Cronin-Hennessy J. Hietala P. Zweber S. Dobbs Z. Metreveli K. K. Seth A. Tomaradze T. Xiao S. Brisbane J. Libby L. Martin A. Powell P. Spradlin G. Wilkinson H. Mendez J. Y. Ge D. H. Miller I. P. J. Shipsey B. Xin G. S. Adams D. Hu B. Moziak J. Napolitano K. M. Ecklund J. Insler H. Muramatsu C. S. Park L. J. Pearson E. H. Thorndike F. Yang S. Ricciardi C. Thomas M. Artuso S. Blusk R. Mountain T. Skwarnicki S. Stone J. C. Wang L. M. Zhang G. Bonvicini D. Cinabro A. Lincoln M. J. Smith P. Zhou J. Zhu P. Naik J. Rademacker D. M. Asner K. W. Edwards K. Randrianarivony G. Tatishvili R. A. Briere H. Vogel P. U. E. Onyisi J. L. Rosner J. P. Alexander D. G. Cassel S. Das R. Ehrlich L. Fields L. Gibbons R. Gray S. W. Gray D. L. Hartill B. K. Heltsley D. L. Kreinick V. E. Kuznetsov J. R. Patterson D. Peterson D. Riley A. Ryd A. J. Sadoff X. Shi W. M. Sun
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classification ✦ hep-ex
keywords firstimprovedmeasurementanalysesbranchingcombineddecayfactor
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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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