Phys. Rev. D
65,
031102(R)
(2001)
[5 pages]
Measurement of the Ξc+ lifetime
A. H. Mahmood et al. (CLEO Collaboration)
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A. H. Mahmood1, S. E. Csorna2, I. Danko2, Z. Xu2, G. Bonvicini3, D. Cinabro3, M. Dubrovin3, S. McGee3, A. Bornheim4, E. Lipeles4, S. P. Pappas4, A. Shapiro4, W. M. Sun4, A. J. Weinstein4, G. Masek5, H. P. Paar5, R. Mahapatra6, R. J. Morrison6, H. N. Nelson6, R. A. Briere7, G. P. Chen7, T. Ferguson7, G. Tatishvili7, H. Vogel7, N. E. Adam8, J. P. Alexander8, C. Bebek8, K. Berkelman8, F. Blanc8, 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, E. Nordberg8, M. Palmer8, J. R. Patterson8, D. Peterson8, J. Pivarski8, D. Riley8, A. J. Sadoff8, H. Schwarthoff8, M. R. Shepherd8, J. G. Thayer8, D. Urner8, B. Valant-Spaight8, G. Viehhauser8, A. Warburton8, M. Weinberger8, S. B. Athar9, P. Avery9, C. Prescott9, H. Stoeck9, J. Yelton9, G. Brandenburg10, A. Ershov10, D. Y.-J. Kim10, R. Wilson10, K. Benslama11, B. I. Eisenstein11, J. Ernst11, G. D. Gollin11, R. M. Hans11, I. Karliner11, N. Lowrey11, M. A. Marsh11, C. Plager11, C. Sedlack11, M. Selen11, J. J. Thaler11, J. Williams11, K. W. Edwards12, R. Ammar13, D. Besson13, X. Zhao13, S. Anderson14, V. V. Frolov14, Y. Kubota14, S. J. Lee14, S. Z. Li14, R. Poling14, A. Smith14, C. J. Stepaniak14, J. Urheim14, S. Ahmed15, M. S. Alam15, L. Jian15, M. Saleem15, F. Wappler15, E. Eckhart16, K. K. Gan16, C. Gwon16, T. Hart16, K. Honscheid16, D. Hufnagel16, H. Kagan16, R. Kass16, T. K. Pedlar16, J. B. Thayer16, E. von Toerne16, T. Wilksen16, M. M. Zoeller16, S. J. Richichi17, H. Severini17, P. Skubic17, S. A. Dytman18, 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, E. H. Thorndike20, T. E. Coan21, Y. S. Gao21, F. Liu21, Y. Maravin21, I. Narsky21, R. Stroynowski21, J. Ye21, M. Artuso22, C. Boulahouache22, K. Bukin22, E. Dambasuren22, R. Mountain22, T. Skwarnicki22, S. Stone22, and J. C. Wang22 (CLEO Collaboration)
1University of Texas–Pan American, Edinburg, Texas 78539
2Vanderbilt University, Nashville, Tennessee 37235
3Wayne State University, Detroit, Michigan 48202
4California Institute of Technology, Pasadena, California 91125
5University of California, San Diego, La Jolla, California 92093
6University of California, Santa Barbara, California 93106
7Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
8Cornell University, Ithaca, New York 14853
9University of Florida, Gainesville, Florida 32611
10Harvard University, Cambridge, Massachusetts 02138
11University of Illinois, Urbana-Champaign, Illinois 61801
12Carleton University, Ottawa, Ontario, Canada K1S 5B6the Institute of Particle Physics, Canada
13University of Kansas, Lawrence, Kansas 66045
14University of Minnesota, Minneapolis, Minnesota 55455
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
21Southern Methodist University, Dallas, Texas 75275
22Syracuse University, Syracuse, New York 13244
Received 19 October 2001; published 26 December 2001
The Ξc+ lifetime is measured using 9.0 fb-1 of e+e- annihilation data collected on and just below the Υ(4S) resonance with the CLEO II.V detector at CESR. This is the first measurement of the Ξc+ lifetime from a collider experiment. Using an unbinned maximum likelihood fit, the Ξc+ lifetime is measured to be 503±47(stat)±18(syst)fs. The precision of this measurement is comparable to previous measurements carried out by fixed target experiments with different sources of systematic uncertainties.
© 2001 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.65.031102
DOI:
10.1103/PhysRevD.65.031102
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