First Measurement of the Form Factors in the Decays D0 to rho- e+ nu_e and D+ to rho0 e+ nu_e

CLEO Collaboration: S. Dobbs , Z. Metreveli , K. K. Seth , A. Tomaradze , T. Xiao , L. Martin , A. Powell , G. Wilkinson

show 72 more authors

H. Mendez J. Y. Ge G. S. Huang D. H. Miller V. Pavlunin 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 S. Ricciardi C. Thomas M. Artuso S. Blusk R. Mountain T. Skwarnicki S. Stone 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. Gibbons 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 J. Yelton P. Rubin N. Lowrey S. Mehrabyan M. Selen J. Wiss J. Libby M. Kornicer R. E. Mitchell C. M. Tarbert D. Besson T. K. Pedlar D. Cronin-Hennessy J. Hietala

Authors on Pith no claims yet

classification ✦ hep-ex

keywords formbranchingddbardecaysfactorfactorsfirstfractions

0 comments

read the original abstract

Using the entire CLEO-c psi(3770) to DDbar event sample, corresponding to an integrated luminosity of 818 pb^-1 and approximately 5.4 x 10^6 DDbar events, we measure the form factors for the decays D0 to rho- e+ nu_e and D+ to rho0 e+ nu_e for the first time and the branching fractions with improved precision. A four-dimensional unbinned maximum likelihood fit determines the form factor ratios to be: V(0)/A_1(0) = 1.48 +- 0.15 +- 0.05 and A_2(0)/A_1(0)= 0.83 +- 0.11 +- 0.04. Assuming CKM unitarity, the known D meson lifetimes and our measured branching fractions we obtain the form factor normalizations A_1(0), A_2(0), and V(0). We also present a measurement of the branching fraction for D^+ to omega e^+ nu_e with improved precision.

This paper has not been read by Pith yet.

discussion (0)

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

Review of experimental studies of charmed meson decays at BESIII
hep-ex 2026-04 unverdicted novelty 3.0

A review of BESIII charmed meson decay studies presents the most precise averages for |V_cs|, |V_cd|, D and D_s decay constants, and several hadronic form factors from combined experimental results.