Phys. Rev. Lett.
99,
071802
(2007)
[5 pages]
Measurement of the Decay Constant fDs+ Using Ds+→l+ν
M. Artuso et al. CLEO Collaboration
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M. Artuso1, S. Blusk1, J. Butt1, S. Khalil1, J. Li1, N. Menaa1, R. Mountain1, S. Nisar1, K. Randrianarivony1, R. Sia1, T. Skwarnicki1, S. Stone1, J. C. Wang1, G. Bonvicini2, D. Cinabro2, M. Dubrovin2, A. Lincoln2, D. M. Asner3, K. W. Edwards3, P. Naik3, R. A. Briere4, T. Ferguson4, G. Tatishvili4, H. Vogel4, M. E. Watkins4, J. L. Rosner5, N. E. Adam6, J. P. Alexander6, D. G. Cassel6, J. E. Duboscq6, R. Ehrlich6, L. Fields6, L. Gibbons6, R. Gray6, S. W. Gray6, D. L. Hartill6, B. K. Heltsley6, D. Hertz6, C. D. Jones6, J. Kandaswamy6, D. L. Kreinick6, V. E. Kuznetsov6, H. Mahlke-Krüger6, D. Mohapatra6, P. U. E. Onyisi6, J. R. Patterson6, D. Peterson6, J. Pivarski6, D. Riley6, A. Ryd6, A. J. Sadoff6, H. Schwarthoff6, X. Shi6, S. Stroiney6, W. M. Sun6, T. Wilksen6, S. B. Athar7, R. Patel7, J. Yelton7, P. Rubin8, C. Cawlfield9, B. I. Eisenstein9, I. Karliner9, D. Kim9, N. Lowrey9, M. Selen9, E. J. White9, J. Wiss9, R. E. Mitchell10, M. R. Shepherd10, D. Besson11, T. K. Pedlar12, D. Cronin-Hennessy13, K. Y. Gao13, J. Hietala13, Y. Kubota13, T. Klein13, B. W. Lang13, R. Poling13, A. W. Scott13, A. Smith13, P. Zweber13, S. Dobbs14, Z. Metreveli14, K. K. Seth14, A. Tomaradze14, J. Ernst15, K. M. Ecklund16, H. Severini17, W. Love18, V. Savinov18, O. Aquines19, A. Lopez19, S. Mehrabyan19, H. Mendez19, J. Ramirez19, G. S. Huang20, D. H. Miller20, V. Pavlunin20, B. Sanghi20, I. P. J. Shipsey20, B. Xin20, G. S. Adams21, M. Anderson21, J. P. Cummings21, I. Danko21, D. Hu21, B. Moziak21, J. Napolitano21, Q. He22, J. Insler22, H. Muramatsu22, C. S. Park22, E. H. Thorndike22, and F. Yang22 (CLEO Collaboration)
1Syracuse University, Syracuse, New York 13244, USA
2Wayne State University, Detroit, Michigan 48202, USA
3Carleton University, Ottawa, Ontario, Canada K1S 5B6
4Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
5Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
6Cornell University, Ithaca, New York 14853, USA
7University of Florida, Gainesville, Florida 32611, USA
8George Mason University, Fairfax, Virginia 22030, USA
9University of Illinois, Urbana-Champaign, Illinois 61801, USA
10Indiana University, Bloomington, Indiana 47405, USA
11University of Kansas, Lawrence, Kansas 66045, USA
12Luther College, Decorah, Iowa 52101, USA
13University of Minnesota, Minneapolis, Minnesota 55455, USA
14Northwestern University, Evanston, Illinois 60208, USA
15State University of New York at Albany, Albany, New York 12222, USA
16State University of New York at Buffalo, Buffalo, New York 14260, USA
17University of Oklahoma, Norman, Oklahoma 73019, USA
18University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
19University of Puerto Rico, Mayaguez, Puerto Rico 00681
20Purdue University, West Lafayette, Indiana 47907, USA
21Rensselaer Polytechnic Institute, Troy, New York 12180, USA
22University of Rochester, Rochester, New York 14627, USA
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Publisher's Note
Received 3 April 2007; published 17 August 2007; corrected 17 August 2007
We measure the decay constant fDs+ using the Ds+→ℓ+ν channel, where the ℓ+ designates either a μ+ or a τ+, when the τ+→π+ν̅ . Using both measurements we find fDs+=274±13±7 MeV. Combining with our previous determination of fD+, we compute the ratio fDs+/fD+=1.23±0.11±0.04. We compare with theoretical estimates.
© 2007 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.071802
DOI:
10.1103/PhysRevLett.99.071802
See Also
Publisher's Note:
M. Artuso et al. CLEO Collaboration,
Publisher’s Note: Measurement of the Decay Constant fDs+ Using Ds+→l+ν [Phys. Rev. Lett. 99, 071802 (2007)],
Phys. Rev. Lett. 99, 089903 (2007).
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