Phys. Rev. Lett.
90,
101801
(2003)
[3 pages]
First Search for the Flavor Changing Neutral Current Decay D0→γγ
T. E. Coan et al. CLEO Collaboration
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T. E. Coan1, Y. S. Gao1, F. Liu1, Y. Maravin1, R. Stroynowski1, M. Artuso2, C. Boulahouache2, S. Blusk2, K. Bukin2, E. Dambasuren2, G. C. Moneti2, R. Mountain2, H. Muramatsu2, R. Nandakumar2, T. Skwarnicki2, S. Stone2, J. C. Wang2, A. H. Mahmood3, S. E. Csorna4, I. Danko4, G. Bonvicini5, D. Cinabro5, M. Dubrovin5, S. McGee5, A. Bornheim6, E. Lipeles6, S. P. Pappas6, A. Shapiro6, W. M. Sun6, A. J. Weinstein6, R. A. Briere7, G. P. Chen7, T. Ferguson7, G. Tatishvili7, H. Vogel7, N. E. Adam8, J. P. Alexander8, K. Berkelman8, V. Boisvert8, D. G. Cassel8, P. S. Drell8, J. E. Duboscq8, K. M. Ecklund8, R. Ehrlich8, R. S. Galik8, L. Gibbons8, B. Gittelman8, S. W. Gray8, D. L. Hartill8, B. K. Heltsley8, L. Hsu8, C. D. Jones8, J. Kandaswamy8, D. L. Kreinick8, A. Magerkurth8, H. Mahlke-Krüger8, T. O. Meyer8, N. B. Mistry8, J. R. Patterson8, D. Peterson8, J. Pivarski8, S. J. Richichi8, D. Riley8, A. J. Sadoff8, H. Schwarthoff8, M. R. Shepherd8, J. G. Thayer8, D. Urner8, T. Wilksen8, A. Warburton8, M. Weinberger8, S. B. Athar9, P. Avery9, L. Breva-Newell9, V. Potlia9, H. Stoeck9, J. Yelton9, K. Benslama10, B. I. Eisenstein10, G. D. Gollin10, I. Karliner10, N. Lowrey10, C. Plager10, C. Sedlack10, M. Selen10, J. J. Thaler10, J. Williams10, K. W. Edwards11, R. Ammar12, D. Besson12, S. Anderson13, V. V. Frolov13, D. T. Gong13, Y. Kubota13, S. Z. Li13, R. Poling13, A. Smith13, C. J. Stepaniak13, J. Urheim13, Z. Metreveli14, K. K. Seth14, A. Tomaradze14, P. Zweber14, S. Ahmed15, M. S. Alam15, J. Ernst15, L. Jian15, M. Saleem15, F. Wappler15, K. Arms16, E. Eckhart16, K. K. Gan16, C. Gwon16, K. Honscheid16, D. Hufnagel16, H. Kagan16, R. Kass16, T. K. Pedlar16, E. von Toerne16, M. M. Zoeller16, H. Severini17, P. Skubic17, S. A. Dytman18, J. A. Mueller18, S. Nam18, V. Savinov18, S. Chen19, J. W. Hinson19, J. Lee19, D. H. Miller19, V. Pavlunin19, E. I. Shibata19, I. P. J. Shipsey19, D. Cronin-Hennessy20, A. L. Lyon20, C. S. Park20, W. Park20, J. B. Thayer20, and E. H. Thorndike20 (CLEO Collaboration)
1Southern Methodist University, Dallas, Texas 75275
2Syracuse University, Syracuse, New York 13244
3University of Texas–Pan American, Edinburg, Texas 78539
4Vanderbilt University, Nashville, Tennessee 37235
5Wayne State University, Detroit, Michigan 48202
6California Institute of Technology, Pasadena, California 91125
7Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
8Cornell University, Ithaca, New York 14853
9University of Florida, Gainesville, Florida 32611
10University of Illinois, Urbana-Champaign, Illinois 61801
11Carleton University, Ottawa, Ontario, Canada K1S 5B6 and the Institute of Particle Physics, Canada M5S 1A7
12University of Kansas, Lawrence, Kansas 66045
13University of Minnesota, Minneapolis, Minnesota 55455
14Northwestern University, Evanston, Illinois 60208
15State University of New York at Albany, Albany, New York 12222
16Ohio State University, Columbus, Ohio 43210
17University of Oklahoma, Norman, Oklahoma 73019
18University of Pittsburgh, Pittsburgh, Pennsylvania 15260
19Purdue University, West Lafayette, Indiana 47907
20University of Rochester, Rochester, New York 14627
Received 16 December 2002; published 12 March 2003
Using 13.8 fb-1 of data collected at or just below the Υ(4S) with the CLEO detector, we report the result of a search for the flavor changing neutral current process D0→γγ. We observe no significant signal for this decay mode and determine 90% confidence level upper limits on the branching fractions B(D0→γγ)/B(D0→π0π0)<0.033 and B(D0→γγ)<2.9×10-5.
© 2003 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.101801
DOI:
10.1103/PhysRevLett.90.101801
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