Phys. Rev. Lett.
88,
111803
(2002)
[5 pages]
Search for CP Violation in τ→ Kπντ Decays
G. Bonvicini et al. (CLEO Collaboration)
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G. Bonvicini1, D. Cinabro1, M. Dubrovin1, S. McGee1, A. Bornheim2, E. Lipeles2, S. P. Pappas2, A. Shapiro2, W. M. Sun2, A. J. Weinstein2, G. Masek3, H. P. Paar3, R. Mahapatra4, R. J. Morrison4, R. A. Briere5, G. P. Chen5, T. Ferguson5, G. Tatishvili5, H. Vogel5, N. E. Adam6, J. P. Alexander6, C. Bebek6, K. Berkelman6, F. Blanc6, V. Boisvert6, D. G. Cassel6, P. S. Drell6, J. E. Duboscq6, K. M. Ecklund6, R. Ehrlich6, L. Gibbons6, B. Gittelman6, S. W. Gray6, D. L. Hartill6, B. K. Heltsley6, L. Hsu6, C. D. Jones6, J. Kandaswamy6, D. L. Kreinick6, A. Magerkurth6, H. Mahlke-Krüger6, T. O. Meyer6, N. B. Mistry6, E. Nordberg6, M. Palmer6, J. R. Patterson6, D. Peterson6, J. Pivarski6, D. Riley6, A. J. Sadoff6, H. Schwarthoff6, M. R. Shepherd6, J. G. Thayer6, D. Urner6, B. Valant-Spaight6, G. Viehhauser6, A. Warburton6, M. Weinberger6, S. B. Athar7, P. Avery7, C. Prescott7, H. Stoeck7, J. Yelton7, G. Brandenburg8, A. Ershov8, D. Y.-J. J. Kim8, R. Wilson8, K. Benslama9, B. I. Eisenstein9, J. Ernst9, G. D. Gollin9, R. M. Hans9, I. Karliner9, N. Lowrey9, M. A. Marsh9, C. Plager9, C. Sedlack9, M. Selen9, J. J. Thaler9, J. Williams9, K. W. Edwards10, R. Ammar11, D. Besson11, X. Zhao11, S. Anderson12, V. V. Frolov12, Y. Kubota12, S. J. Lee12, S. Z. Li12, R. Poling12, A. Smith12, C. J. Stepaniak12, J. Urheim12, S. Ahmed13, M. S. Alam13, L. Jian13, M. Saleem13, F. Wappler13, E. Eckhart14, K. K. Gan14, C. Gwon14, T. Hart14, K. Honscheid14, D. Hufnagel14, H. Kagan14, R. Kass14, T. K. Pedlar14, J. B. Thayer14, E. von Toerne, T. Wilksen14, M. M. Zoeller14, S. J. Richichi15, H. Severini15, P. Skubic15, S. A. Dytman16, S. Nam16, V. Savinov16, S. Chen17, J. W. Hinson17, J. Lee17, D. H. Miller17, V. Pavlunin17, E. I. Shibata17, I. P. J. Shipsey1,7, D. Cronin-Hennessy18, A. L. Lyon18, C. S. Park18, W. Park18, E. H. Thorndike18, T. E. Coan19, Y. S. Gao19, F. Liu19, Y. Maravin19, I. Narsky19, R. Stroynowski19, J. Ye19, M. Artuso20, C. Boulahouache20, K. Bukin20, E. Dambasuren20, R. Mountain20, T. Skwarnicki20, S. Stone20, J. C. Wang20, A. H. Mahmood21, S. E. Csorna22, I. Danko22, and Z. Xu22 (CLEO Collaboration)
1Wayne State University, Detroit, Michigan 48202
2California Institute of Technology, Pasadena, California 91125
3University of California, San Diego, La Jolla, California 92093
4University of California, Santa Barbara, California 93106
5Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
6Cornell University, Ithaca, New York 14853
7University of Florida, Gainesville, Florida 32611
8Harvard University, Cambridge, Massachusetts 02138
9University of Illinois, Urbana-Champaign, Illinois 61801
10Carleton University, Ottawa, Ontario, Canada K1S 5B6
10band the Institute of Particle Physics, Canada
11University of Kansas, Lawrence, Kansas 66045
12University of Minnesota, Minneapolis, Minnesota 55455
13State University of New York at Albany, Albany, New York 12222
14Ohio State University, Columbus, Ohio 43210
15University of Oklahoma, Norman, Oklahoma 73019
16University of Pittsburgh, Pittsburgh, Pennsylvania 15260
17Purdue University, West Lafayette, Indiana 47907
18University of Rochester, Rochester, New York 14627
19Southern Methodist University, Dallas, Texas 75275
20Syracuse University, Syracuse, New York 13244
21University of Texas-Pan American, Edinburg, Texas 78539
22Vanderbilt University, Nashville, Tennessee 37235
Received 19 November 2001; published 28 February 2002
We search and find no evidence for CP violation in τ decays into the Kπντ final state. We provide limits on the imaginary part of the coupling constant Λ describing a relative contribution of the CP violating processes with respect to the standard model to be -0.172<Im(Λ)<0.067 at 90% C.L.
© 2002 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.111803
DOI:
10.1103/PhysRevLett.88.111803
PACS:
11.30.Er, 12.60.Fr, 13.35.Dx
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