Phys. Rev. D 40, 263 - 266 (1989)
Search for the production of fractionally charged particles in e+e- annihilations at sqrt[s]=10.5 GeV
T. Bowcock et al.
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T. Bowcock, K. Kinoshita, P. Mauskopf, F. M. Pipkin, M. Procario, Richard Wilson, J. Wolinski, D. Xiao, P. Baringerb, P. Haasb, Ha Lamb, A. Jawaheryc, C. H. Parkc, D. Perticoned, R. Polingd, R. Fultone, M. Hempsteade, T. Jensene, D. R. Johnsone, H. Kagane, R. Kasse, F. Morrowe, J. Whitmoree, W. -Y. Chenf, J. M. Dominickf, R. L. McIlwainf, D. H. Millerf, C. R. Ngf, E. I. Shibataf, W. -M. Yaof, E. H. Thorndikeg, M. S. Alamh, N. Katayamah, I. J. Kimh, W. C. Lih, X. C. Louh, C. R. Sunh, D. Bortolettoi, M. Goldbergi, N. Horwitzi, P. Lubranoi, M. D. Mestayeri, G. C. Monetii, V. Sharmai, I. P. J. Shipseyi, T. Skwarnickii, S. E. Csornaj, T. Letsonj, I. C. Brockk, T. Fergusonk, M. Artusol, C. Bebekl, K. Berkelmanl, J. Byrdl, D. G. Cassell, E. Cheul, D. M. Coffmanl, G. Crawfordl, J. W. DeWirel, P. S. Drelll, R. Ehrlichl, R. S. Galikl, B. Gittelmanl, S. W. Grayl, A. M. Hallingl, D. L. Hartilll, B. K. Heltsleyl, J. Kandaswamyl, R. Kowalewskil, D. L. Kreinickl, Y. Kubotal, J. D. Lewisl, N. B. Mistryl, J. Muellerl, R. Namjoshil, S. Nandil, E. Nordbergl, C. O'Gradyl, D. Petersonl, M. Pisharodyl, D. Rileyl, M. Sapperl, A. Silvermanl, S. Stonel, H. Wordenl, M. Worrisl, A. J. Sadoffm, P. Averyn, D. Bessonn, L. Garrenn, and J. Yeltonn aHarvard University, Cambridge, Massachusetts 02138
bUniversity of Kansas, Lawrence, Kansas 66045
cUniversity of Maryland, College Park, Maryland 20742
dUniversity of Minnesota, Minneapolis, Minnesota 55455
eOhio State University, Columbus, Ohio 43210
fPurdue University, West Lafayette, Indiana 47907
gUniversity of Rochester, Rochester, New York 14627
hState University of New York at Albany, Albany, New York 12222
iSyracuse University, Syracuse, New York 13210
jVanderbilt University, Nashville, Tennessee 37235
kCarnegie-Mellon University, Pittsburgh, Pennsylvania 15213
lCornell University, Ithaca, New York 14853
mIthaca College, Ithaca, New York 14850
nUniversity of Florida, Gainesville, Florida 32611
Received 29 March 1989
We report the results of a search for particles with electric charge Q=2 / 3e produced in e+e- annihilations at W=10.5 GeV. The ratio of the cross section for the inclusive production of fractionally charged particles (q) to the dimuon point cross section, Rq=σ(e+e-→qX) / σ(e+e-→μ+μ-), is found to have an upper limit at 90% confidence level of 1.0×10-4 for masses less than 3.5 GeV/c2.
©1989 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevD.40.263
DOI: 10.1103/PhysRevD.40.263
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