First search for the flavor changing neutral current decay D0 → γγ

T. E. Coan, Y. S. Gao, F. Liu, Y. Maravin, R. Stroynowski, M. Artuso, C. Boulahouache, S. Blusk, K. Bukin, E. Dambasuren, G. C. Moneti, R. Mountain, H. Muramatsu, R. Nandakumar, T. Skwarnicki, S. Stone, J. C. Wang, A. H. Mahmood, S. E. Csorna, I. DankoG. Bonvicini, D. Cinabro, M. Dubrovin, S. McGee, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, W. M. Sun, A. J. Weinstein, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, N. E. Adam, J. P. Alexander, K. Berkelman, V. Boisvert, D. G. Cassel, P. S. Drell, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, R. S. Galik, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley

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25 Scopus citations

Abstract

The result of a search for the flavor changing neutral current (FCNC) process of D0 → γγ was reported. As such, no significant signal for this decay mode was observed and the first 90% C.L. upper limits on the given branching fractions was determined. This result was an order of magnitude above a theoretical prediction.

Original languageEnglish (US)
Article number101801
Pages (from-to)101801/1-101801/3
JournalPhysical review letters
Volume90
Issue number10
StatePublished - Mar 14 2003

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