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arXiv · 1009.1606

Search for rare and forbidden decays of charm and charmed-strange mesons to final states h^+- e^-+ e^+

CLEO Collaboration·P. Rubin·N. Lowrey·S. Mehrabyan·M. Selen·J. Wiss·J. Libby·M. Kornicer·R. E. Mitchell·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·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·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
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Abstract

We have searched for flavor-changing neutral current decays and lepton-number-violating decays of D^+ and D^+_s mesons to final states of the form h^+- e^-+ e^+, where h is either \pi or K. We use the complete samples of CLEO-c open-charm data, corresponding to integrated luminosities of 818 pb^-1 at the center-of-mass energy E_CM = 3.774 GeV containing 2.4 x 10^6 D^+D^- pairs and 602 pb^-1 at E_CM = 4.170 GeV containing 0.6 x 10^6 D^*+-_s D^-+_s pairs. No signal is observed in any channel, and we obtain 90% confidence level upper limits on branching fractions B(D^+ --> \pi^+ e^+ e^-) < 5.9 x 10^-6, B(D^+ --> \pi^- e^+ e^+) < 1.1 x 10^-6, B(D^+ --> K^+ e^+ e^-) < 3.0 x 10^-6, B(D^+ --> K^- e^+ e^+) < 3.5 x 10^-6, B(D^+_s --> \pi^+ e^+ e^-) < 2.2 x 10^-5, B(D^+_s --> \pi^- e^+ e^+) < 1.8 x 10^-5, B(D^+_s --> K^+ e^+ e^-) < 5.2 x 10^-5, and B(D^+_s --> K^- e^+ e^+) < 1.7 x 10^-5.

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CLEO Collaboration, P. Rubin, N. Lowrey, S. Mehrabyan, M. Selen, J. Wiss, J. Libby, M. Kornicer, R. E. Mitchell, 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, 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, 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. 2010-09-08. Search for rare and forbidden decays of charm and charmed-strange mesons to final states h^+- e^-+ e^+. https://doi.org/10.1103/physrevd.82.092007

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