Phys. Rev. D
66,
071101(R)
(2002)
[4 pages]
Search for neutrinoless τ decays involving the KS0 meson
S. Chen et al. (CLEO Collaboration)
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S. Chen1, J. W. Hinson1, J. Lee1, D. H. Miller1, V. Pavlunin1, E. I. Shibata1, I. P. J. Shipsey1, D. Cronin-Hennessy2, A. L. Lyon2, C. S. Park2, W. Park2, E. H. Thorndike2, T. E. Coan3, Y. S. Gao3, F. Liu3, Y. Maravin3, R. Stroynowski3, M. Artuso4, C. Boulahouache4, K. Bukin4, E. Dambasuren4, K. Khroustalev4, R. Mountain4, R. Nandakumar4, T. Skwarnicki4, S. Stone4, J. C. Wang4, A. H. Mahmood5, S. E. Csorna6, I. Danko6, G. Bonvicini7, D. Cinabro7, M. Dubrovin7, S. McGee7, A. Bornheim8, E. Lipeles8, S. P. Pappas8, A. Shapiro8, W. M. Sun8, A. J. Weinstein8, R. Mahapatra9, R. A. Briere10, G. P. Chen10, T. Ferguson10, G. Tatishvili10, H. Vogel10, N. E. Adam11, J. P. Alexander11, K. Berkelman11, V. Boisvert11, D. G. Cassel11, P. S. Drell11, J. E. Duboscq11, K. M. Ecklund11, R. Ehrlich11, R. S. Galik11, L. Gibbons11, B. Gittelman11, S. W. Gray11, D. L. Hartill11, B. K. Heltsley11, L. Hsu11, C. D. Jones11, J. Kandaswamy11, D. L. Kreinick11, A. Magerkurth11, H. Mahlke-Krüger11, T. O. Meyer11, N. B. Mistry11, E. Nordberg11, J. R. Patterson11, D. Peterson11, J. Pivarski11, D. Riley11, A. J. Sadoff11, H. Schwarthoff11, M. R. Shepherd11, J. G. Thayer11, D. Urner11, G. Viehhauser11, A. Warburton11, M. Weinberger11, S. B. Athar12, P. Avery12, L. Breva-Newell12, V. Potlia12, H. Stoeck12, J. Yelton12, G. Brandenburg13, D. Y.-J. Kim13, R. Wilson13, K. Benslama14, B. I. Eisenstein14, J. Ernst14, G. D. Gollin14, R. M. Hans14, I. Karliner14, N. Lowrey14, C. Plager14, C. Sedlack14, M. Selen14, J. J. Thaler14, J. Williams14, K. W. Edwards15, R. Ammar16, D. Besson16, X. Zhao16, S. Anderson17, V. V. Frolov17, Y. Kubota17, S. J. Lee17, S. Z. Li17, R. Poling17, A. Smith17, C. J. Stepaniak17, J. Urheim17, Z. Metreveli18, K. K. Seth18, A. Tomaradze18, P. Zweber18, S. Ahmed19, M. S. Alam19, L. Jian19, M. Saleem19, F. Wappler19, K. Arms20, E. Eckhart20, K. K. Gan20, C. Gwon20, T. Hart20, K. Honscheid20, D. Hufnagel20, H. Kagan20, R. Kass20, C. Morris20, T. K. Pedlar20, J. B. Thayer20, E. von Toerne20, T. Wilksen20, M. M. Zoeller20, H. Muramatsu21, S. J. Richichi21, H. Severini21, P. Skubic21, S. A. Dytman22, J. A. Mueller22, S. Nam22, and V. Savinov22 (CLEO Collaboration)
1Purdue University, West Lafayette, Indiana 47907
2University of Rochester, Rochester, New York 14627
3Southern Methodist University, Dallas, Texas 75275
4Syracuse University, Syracuse, New York 13244
5University of Texas—Pan American, Edinburg, Texas 78539
6Vanderbilt University, Nashville, Tennessee 37235
7Wayne State University, Detroit, Michigan 48202
8California Institute of Technology, Pasadena, California 91125
9University of California, Santa Barbara, California 93106
10Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
11Cornell University, Ithaca, New York 14853
12University of Florida, Gainesville, Florida 32611
13Harvard University, Cambridge, Massachusetts 02138
14University of Illinois, Urbana-Champaign, Illinois 61801
15Carleton University, Ottawa, Ontario, Canada K1S 5B6the Institute of Particle Physics, Canada M5S 1A7
16University of Kansas, Lawrence, Kansas 66045
17University of Minnesota, Minneapolis, Minnesota 55455
18Northwestern University, Evanston, Illinois 60208
19State University of New York at Albany, Albany, New York 12222
20Ohio State University, Columbus, Ohio 43210
21University of Oklahoma, Norman, Oklahoma 73019
22University of Pittsburgh, Pittsburgh, Pennsylvania 15260
Received 6 August 2002; published 2 October 2002
We have searched for lepton flavor violating decays of the τ lepton with one or two KS0 mesons in the final state. The data used in the search were collected with the CLEO II and II.V detectors at the Cornell Electron Storage Ring (CESR) and correspond to an integrated luminosity of 13.9fb-1 at the Υ(4S) resonance. No evidence for signals were found; therefore, we have set 90% confidence level (C.L.) upper limits on the branching fractions B(τ-→e-KS0)<9.1×10-7, B(τ-→μ-KS0)<9.5×10-7, B(τ-→e-KS0KS0)<2.2×10-6, and B(τ-→μ-KS0KS0)<3.4×10-6. These represent significantly improved upper limits on the two-body decays and first upper limits on the three-body decays.
© 2002 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.66.071101
DOI:
10.1103/PhysRevD.66.071101
PACS:
13.35.Dx, 11.30.Hv, 14.40.Aq, 14.60.Fg
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