Analysis of the Decay D^0 to K^0_S pi^0 pi^0
Abstract
We present the results of a Dalitz plot analysis of D^0 to K^0_S pi^0 pi^0 using the CLEO-c data set of 818 inverse pico-barns of e^+ e^- collisions accumulated at sqrt{s} = 3.77 GeV. This corresponds to three million D^0 D^0-bar pairs from which we select 1,259 tagged candidates with a background of 7.5 +- 0.9 percent. Several models have been explored, all of which include the K^*(892), K^*_2(1430), K^*(1680), the f_0(980), and the sigma(500). We find that the combined pi^0 pi^0 S-wave contribution to our preferred fit is (28.9 +- 6.3 +- 3.1)% of the total decay rate while D^0 to K^*(892)^0 pi^0 contributes (65.6 +- 5.3 +- 2.5)%. Using three tag modes and correcting for quantum correlations we measure the D^0 to K^0_S pi^0 pi^0 branching fraction to be (1.059 +- 0.038 +- 0.061)%.
Keywords
Cite
@article{arxiv.1106.3103,
title = {Analysis of the Decay D^0 to K^0_S pi^0 pi^0},
author = {CLEO Collaboration and N. Lowrey and S. Mehrabyan and M. Selen and J. Wiss and J. Libby and M. Kornicer and R. E. Mitchell and M. R. Shepherd and C. M. Tarbert and D. Besson and T. K. Pedlar and J. Xavier and D. Cronin-Hennessy and J. Hietala and P. Zweber and S. Dobbs and Z. Metreveli and K. K. Seth and A. Tomaradze and T. Xiao and S. Brisbane and L. Martin and A. Powell and P. Spradlin and G. Wilkinson and H. Mendez and J. Y. Ge and D. H. Miller and I. P. J. Shipsey and B. Xin and G. S. Adams and D. Hu and B. Moziak and J. Napolitano and K. M. Ecklund and J. Insler and H. Muramatsu and C. S. Park and L. J. Pearson and E. H. Thorndike and F. Yang and S. Ricciardi and C. Thomas and M. Artuso and S. Blusk and R. Mountain and T. Skwarnicki and S. Stone and J. C. Wang and L. M. Zhang and G. Bonvicini and D. Cinabro and A. Lincoln and M. J. Smith and P. Zhou and J. Zhu and P. Naik and J. Rademacker and D. M. Asner and K. W. Edwards and K. Randrianarivony and G. Tatishvili and R. A. Briere and H. Vogel and P. U. E. Onyisi and J. L. Rosner and J. P. Alexander and D. G. Cassel and S. Das and R. Ehrlich and L. Fields and L. Gibbons and S. W. Gray and D. L. Hartill and B. K. Heltsley and D. L. Kreinick and V. E. Kuznetsov and J. R. Patterson and D. Peterson and D. Riley and A. Ryd and A. J. Sadoff and X. Shi and W. M. Sun and J. Yelton and P. Rubin},
journal= {arXiv preprint arXiv:1106.3103},
year = {2013}
}
Comments
11 pages, 3 figures, available through http://www.lns.cornell.edu/public/CLNS/, submitted to PRD