Phys. Rev. Lett.
79,
3814–3818
(1997)
Study of the Decay τ-→2π-π+3π0ντ
S. Anderson et al. (CLEO Collaboration)
Show All Authors/Affiliations
Hide All Authors/Affiliations
S. Anderson1, Y. Kubota1, S J. Lee1, J. J. O'Neill1, S. Patton1, R. Poling1, T. Riehle1, V. Savinov1, A. Smith1, M. S. Alam2, S. B. Athar2, Z. Ling2, A. H. Mahmood2, H. Severini2, S. Timm2, F. Wappler2, A. Anastassov3, J. E. Duboscq3, D. Fujino3, K. K. Gan3, T. Hart3, D. Homoelle3, K. Honscheid3, H. Kagan3, R. Kass3, J. Lee3, M. B. Spencer3, M. Sung3, A. Undrus3, R. Wanke3, A. Wolf3, M. M. Zoeller3, B. Nemati4, S. J. Richichi4, W. R. Ross4, P. Skubic4, M. Bishai5, J. Fast5, J. W. Hinson5, N. Menon5, D. H. Miller5, E. I. Shibata5, I. P. J. Shipsey5, M. Yurko5, L. Gibbons6, S. Glenn6, S. D. Johnson6, Y. Kwon6, S. Roberts6, E. H. Thorndike6, C. P. Jessop7, K. Lingel7, H. Marsiske7, M. L. Perl7, D. Ugolini7, R. Wang7, X. Zhou7, T. E. Coan8, V. Fadeyev8, I. Korolkov8, Y. Maravin8, I. Narsky8, V. Shelkov8, J. Staeck8, R. Stroynowski8, I. Volobouev8, J. Ye8, M. Artuso9, A. Efimov9, M. Goldberg9, D. He9, S. Kopp9, G. C. Moneti9, R. Mountain9, S. Schuh9, T. Skwarnicki9, S. Stone9, G. Viehhauser9, X. Xing9, J. Bartelt10, S. E. Csorna10, V. Jain10, K. W. McLean10, S. Marka10, R. Godang11, K. Kinoshita11, I. C. Lai11, P. Pomianowski11, S. Schrenk11, G. Bonvicini12, D. Cinabro12, R. Greene12, L. P. Perera12, G. J. Zhou12, B. Barish13, M. Chadha13, S. Chan13, G. Eigen13, J. S. Miller13, C. O'Grady13, M. Schmidtler13, J. Urheim13, A. J. Weinstein13, F. Würthwein13, D. W. Bliss14, G. Masek14, H. P. Paar14, S. Prell14, V. Sharma14, D. M. Asner15, J. Gronberg15, T. S. Hill15, D. J. Lange15, S. Menary15, R. J. Morrison15, H. N. Nelson15, T. K. Nelson15, C. Qiao15, J. D. Richman15, D. Roberts15, A. Ryd15, M. S. Witherell15, R. Balest16, B. H. Behrens16, W. T. Ford16, H. Park16, J. Roy16, J. G. Smith16, J. P. Alexander17, C. Bebek17, B. E. Berger17, K. Berkelman17, K. Bloom17, D. G. Cassel17, H. A. Cho17, D. S. Crowcroft17, M. Dickson17, P. S. Drell17, K. M. Ecklund17, R. Ehrlich17, A. D. Foland17, P. Gaidarev17, R. S. Galik17, B. Gittelman17, S. W. Gray17, D. L. Hartill17, B. K. Heltsley17, P. I. Hopman17, J. Kandaswamy17, P. C. Kim17, D. L. Kreinick17, T. Lee17, Y. Liu17, G. S. Ludwig17, N. B. Mistry17, C. R. Ng17, E. Nordberg17, M. Ogg17, J. R. Patterson17, D. Peterson17, D. Riley17, A. Soffer17, B. Valant-Spaight17, C. Ward17, M. Athanas18, P. Avery18, C. D. Jones18, M. Lohner18, C. Prescott18, J. Yelton18, J. Zheng18, G. Brandenburg19, R. A. Briere19, A. Ershov19, Y. S. Gao19, D. Y.-J. Kim19, R. Wilson19, H. Yamamoto19, T. E. Browder20, F. Li20, Y. Li20, J. L. Rodriguez20, T. Bergfeld21, B. I. Eisenstein21, J. Ernst21, G. E. Gladding21, G. D. Gollin21, R. M. Hans21, E. Johnson21, I. Karliner21, M. A. Marsh21, M. Palmer21, M. Selen21, J. J. Thaler21, K. W. Edwards22a,22b, A. Bellerive23a,23b, R. Janicek23a,23b, D. B. MacFarlane23a,23b, P. M. Patel23a,23b, A. J. Sadoff24, R. Ammar25, P. Baringer25, A. Bean25, D. Besson25, D. Coppage25, C. Darling25, R. Davis25, N. Hancock25, S. Kotov25, I. Kravchenko25, and N. Kwak25 (CLEO Collaboration)
1University of Minnesota, Minneapolis, Minnesota 55455
2State University of New York at Albany, Albany, New York 12222
3The Ohio State University, Columbus, Ohio 43210
4University of Oklahoma, Norman, Oklahoma 73019
5Purdue University, West Lafayette, Indiana 47907
6University of Rochester, Rochester, New York 14627
7Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
8Southern Methodist University, Dallas, Texas 75275
9Syracuse University, Syracuse, New York 13244
10Vanderbilt University, Nashville, Tennessee 37235
11Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
12Wayne State University, Detroit, Michigan 48202
13California Institute of Technology, Pasadena, California 91125
14University of California, San Diego, La Jolla, California 92093
15University of California, Santa Barbara, California 93106
16University of Colorado, Boulder, Colorado 80309-0390
17Cornell University, Ithaca, New York 14853
18University of Florida, Gainesville, Florida 32611
19Harvard University, Cambridge, Massachusetts 02138
20University of Hawaii at Manoa, Honolulu, Hawaii 96822
21University of Illinois, Champaign-Urbana, Illinois 61801
22aCarleton University, Ottawa, Ontario, Canada K1S 5B6,
22band the Institute of Particle Physics, Montréal, Québec, Canada
23aMcGill University, Montréal, Québec, Canada H3A 2T8,
23band the Institute of Particle Physics, Montréal, Québec, Canada
24Ithaca College, Ithaca, New York 14850
25University of Kansas, Lawrence, Kansas 66045
Received 9 July 1997; published in the issue dated 17 November 1997
The decay τ-→2π-π+3π0ντ has been studied with the CLEO II detector at the Cornell Electron Storage Ring. The branching fraction is measured to be (2.85±0.56±0.51)×10-4. The result is in good agreement with the isospin expectation but somewhat below the conserved-vector-current prediction. We have searched for resonance substructure in the decay. Within the statistical precision, the decay is saturated by the channels τ-→π-2π0ωντ, 2π-π+ηντ, and π-2π0ηντ. This is the first observation of this ω decay mode and the branching fraction is measured to be (1.89-0.67+0.74±0.40)×10-4.
© 1997 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.79.3814
DOI:
10.1103/PhysRevLett.79.3814
|
|
