Phys. Rev. D
49,
5690–5700
(1994)
First measurement of Γ(Ds+→μ+ν)/Γ(Ds+→φπ+)
D. Acosta et al.
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D. Acosta1, M. Athanas1, G. Masek1, H. Paar1, A. Bean2, J. Gronberg2, R. Kutschke2, S. Menary2, R. J. Morrison2, S. Nakanishi2, H. N. Nelson2, T. K. Nelson2, J. D. Richman2, A. Ryd2, H. Tajima2, D. Schmidt2, D. Sperka2, M. S. Witherell2, M. Procario3, S. Yang3, R. Balest4, K. Cho4, M. Daoudi4, W. T. Ford4, D. R. Johnson4, K. Lingel4, M. Lohner4, P. Rankin4, J. G. Smith4, J. P. Alexander5, C. Bebek5, K. Berkelman5, D. Besson5, T. E. Browder5, D. G. Cassel5, H. A. Cho5, D. M. Coffman5, P. S. Drell5, R. Ehrlich5, R. S. Galik5, M. Garcia-Sciveres5, B. Geiser5, B. Gittelman5, S. W. Gray5, D. L. Hartill5, B. K. Heltsley5, C. D. Jones5, S. L. Jones5, J. Kandaswamy5, N. Katayama5, P. C. Kim5, D. L. Kreinick5, G. S. Ludwig5, J. Masui5, J. Mevissen5, N. B. Mistry5, C. R. Ng5, E. Nordberg5, M. Ogg5,*, J. R. Patterson5, D. Peterson5, D. Riley5, S. Salman5, M. Sapper5, H. Worden5, F. Würthwein5, P. Avery6, A. Freyberger6, J. Rodriguez6, R. Stephens6, J. Yelton6, D. Cinabro7, S. Henderson7, K. Kinoshita7, T. Liu7, M. Saulnier7, F. Shen7, R. Wilson7, H. Yamamoto7, B. Ong8, M. Selen8, A. J. Sadoff9, R. Ammar10, S. Ball10, P. Baringer10, D. Coppage10, N. Copty10, R. Davis10, N. Hancock10, M. Kelly10, N. Kwak10, H. Lam10, Y. Kubota11, M. Lattery11, J. K. Nelson11, S. Patton11, D. Perticone11, R. Poling11, V. Savinov11, S. Schrenk11, R. Wang11, M. S. Alam12, I. J. Kim12, B. Nemati12, J. J. O'Neill12, H. Severini12, C. R. Sun12, M. M. Zoeller12, G. Crawford13, C. M. Daubenmier13, R. Fulton13, D. Fujino13, K. K. Gan13, K. Honscheid13, H. Kagan13, R. Kass13, J. Lee13, R. Malchow13, F. Morrow13, Y. Skovpen13,†, M. Sung13, C. White13, J. Whitmore13, P. Wilson13, F. Butler14, X. Fu14, G. Kalbfleisch14, M. Lambrecht14, W. R. Ross14, P. Skubic14, J. Snow14, P. L. Wang14, M. Wood14, D. Bortoletto15, D. N. Brown15, J. Fast15, R. L. McIlwain15, T. Miao15, D. H. Miller15, M. Modesitt15, S. F. Schaffner15, E. I. Shibata15, I. P. J. Shipsey15, P. N. Wang15, M. Battle16, J. Ernst16, H. Kroha16, S. Roberts16, K. Sparks16, E. H. Thorndike16, C. H. Wang16, J. Dominick17, S. Sanghera17, V. Shelkov17, T. Skwarnicki17, R. Stroynowski17, I. Volobouev17, P. Zadorozhny17, M. Artuso18, D. He18, M. Goldberg18, N. Horwitz18, R. Kennett18, G. C. Moneti18, F. Muheim18, Y. Mukhin18, S. Playfer18, Y. Rozen18, S. Stone18, M. Thulasidas18, G. Vasseur18, G. Zhu18, J. Bartelt19, S. E. Csorna19, Z. Egyed19, V. Jain19, P. Sheldon19, D. S. Akerib20, B. Barish20, M. Chadha20, S. Chan20, D. F. Cowen20, G. Eigen20, J. S. Miller20, C. O'Grady20, J. Urheim20, and A. J. Weinstein20
1University of California, San Diego, La Jolla, California 92093
2University of California, Santa Barbara, California 93106
3Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213
4University of Colorado, Boulder, Colorado 80309-0390
5Cornell University, Ithaca, New York 14853
6University of Florida, Gainesville, Florida 32611
7Harvard University, Cambridge, Massachusetts 02138
8University of Illinois, Champaign-Urbana, Illinois 61801
9Ithaca College, Ithaca, New York 14850
10University of Kansas, Lawrence, Kansas 66045
11University of Minnesota, Minneapolis, Minnesota 55455
12State University of New York at Albany, Albany, New York 12222
13Ohio State University, Columbus, Ohio 43210
14University of Oklahoma, Norman, Oklahoma 73019
15Purdue University, West Lafayette, Indiana 47907
16University of Rochester, Rochester, New York 14627
17Southern Methodist University, Dallas, Texas 75275
18Syracuse University, Syracuse, New York 13244
19Vanderbilt University, Nashville, Tennessee 37235
20California Institute of Technology, Pasadena, California 91125
Received 3 August 1993; published in the issue dated 1 June 1994
We present a measurement of Γ(Ds+→μ+ν)/Γ(Ds+→φπ+)=0.245±0.052±0.074. Using this ratio and B(Ds+→φπ+)=(3.7±0.9)% we extract fDs=344±37±52±42 MeV, where the last error is due to the uncertainty in the Ds+→φπ+ absolute branching ratio. This result is larger than most theoretical predictions.
© 1994 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.49.5690
DOI:
10.1103/PhysRevD.49.5690
*Permanent address: Carleton University, Ottawa, Canada K1S 5B6. †Permanent address: INP, Novosibirsk, Russia.
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