APS » Phys. Rev. D » Volume 80 » Issue 5

J. Yelton,¹ P. Rubin,² N. Lowrey,³ S. Mehrabyan,³ M. Selen,³ J. Wiss,³ R. E. Mitchell,⁴ M. R. Shepherd,⁴ D. Besson,⁵ T. K. Pedlar,⁶ D. Cronin-Hennessy,⁷ K. Y. Gao,⁷ J. Hietala,⁷ Y. Kubota,⁷ T. Klein,⁷ R. Poling,⁷ A. W. Scott,⁷ P. Zweber,⁷ S. Dobbs,⁸ Z. Metreveli,⁸ K. K. Seth,⁸ B. J. Y. Tan,⁸ A. Tomaradze,⁸ J. Libby,⁹ L. Martin,⁹ A. Powell,⁹ G. Wilkinson,⁹ H. Mendez,¹⁰ J. Y. Ge,¹¹ D. H. Miller,¹¹ V. Pavlunin,¹¹ B. Sanghi,¹¹ I. P. J. Shipsey,¹¹ B. Xin,¹¹ G. S. Adams,¹² D. Hu,¹² B. Moziak,¹² J. Napolitano,¹² K. M. Ecklund,¹³ Q. He,¹⁴ J. Insler,¹⁴ H. Muramatsu,¹⁴ C. S. Park,¹⁴ E. H. Thorndike,¹⁴ F. Yang,¹⁴ M. Artuso,¹⁵ S. Blusk,¹⁵ S. Khalil,¹⁵ J. Li,¹⁵ R. Mountain,¹⁵ K. Randrianarivony,¹⁵ N. Sultana,¹⁵ T. Skwarnicki,¹⁵ S. Stone,¹⁵ J. C. Wang,¹⁵ L. M. Zhang,¹⁵ G. Bonvicini,¹⁶ D. Cinabro,¹⁶ M. Dubrovin,¹⁶ A. Lincoln,¹⁶ M. J. Smith,¹⁶ P. Naik,¹⁷ J. Rademacker,¹⁷ D. M. Asner,¹⁸ K. W. Edwards,¹⁸ J. Reed,¹⁸ A. N. Robichaud,¹⁸ G. Tatishvili,¹⁸ E. J. White,¹⁸ R. A. Briere,¹⁹ H. Vogel,¹⁹ P. U. E. Onyisi,²⁰ J. L. Rosner,²⁰ J. P. Alexander,²¹ D. G. Cassel,²¹ J. E. Duboscq,²¹ R. Ehrlich,²¹ L. Fields,²¹ L. Gibbons,²¹ R. Gray,²¹ S. W. Gray,²¹ D. L. Hartill,²¹ B. K. Heltsley,²¹ D. Hertz,²¹ J. M. Hunt,²¹ J. Kandaswamy,²¹ D. L. Kreinick,²¹ V. E. Kuznetsov,²¹ J. Ledoux,²¹ H. Mahlke-Krüger,²¹ D. Mohapatra,²¹ J. R. Patterson,²¹ D. Peterson,²¹ D. Riley,²¹ A. Ryd,²¹ A. J. Sadoff,²¹ X. Shi,²¹ S. Stroiney,²¹ W. M. Sun,²¹ and T. Wilksen²¹

(CLEO Collaboration)

¹University of Florida, Gainesville, Florida 32611, USA
²George Mason University, Fairfax, Virginia 22030, USA
³University of Illinois, Urbana-Champaign, Illinois 61801, USA
⁴Indiana University, Bloomington, Indiana 47405, USA
⁵University of Kansas, Lawrence, Kansas 66045, USA
⁶Luther College, Decorah, Iowa 52101, USA
⁷University of Minnesota, Minneapolis, Minnesota 55455, USA
⁸Northwestern University, Evanston, Illinois 60208, USA
⁹University of Oxford, Oxford OX1 3RH, UK
¹⁰University of Puerto Rico, Mayaguez, Puerto Rico 00681
¹¹Purdue University, West Lafayette, Indiana 47907, USA
¹²Rensselaer Polytechnic Institute, Troy, New York 12180, USA
¹³Rice University, Houston, Texas 77005, USA
¹⁴University of Rochester, Rochester, New York 14627, USA
¹⁵Syracuse University, Syracuse, New York 13244, USA
¹⁶Wayne State University, Detroit, Michigan 48202, USA
¹⁷University of Bristol, Bristol BS8 1TL, UK
¹⁸Carleton University, Ottawa, Ontario, Canada K1S 5B6
¹⁹Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
²⁰University of Chicago, Chicago, Illinois 60637, USA
²¹Cornell University, Ithaca, New York 14853, USA

We measure the absolute branching fractions of D_s semileptonic decays where the hadron in the final state is one of phi, eta, eta^[prime], K_S⁰, K^{[small star, filled]0}, and f₀, using 2.8×10⁵ e⁺e^--->D_sD_s^{[small star, filled]} decays collected in the CLEO-c detector at a center-of-mass energy close to 4170 MeV. We obtain [script B](D_s⁺-->phie⁺nu_e)=(2.29±0.37±0.11)%, [script B](D_s⁺-->etae⁺nu_e)=(2.48±0.29±0.13)%, [script B](D_s⁺-->eta^[prime]e⁺nu_e)=(0.91±0.33±0.05)%, where the first uncertainties are statistical and the second are systematic. We also obtain [script B](D_s⁺-->K⁰e⁺nu_e)=(0.37±0.10±0.02)%, and [script B](D_s⁺-->K^{[small star, filled]0}e⁺nu_e)=(0.18±0.07±0.01)%, which are the first measurements of Cabibbo suppressed exclusive D_s semileptonic decays, and, [script B](D_s⁺-->f₀e⁺nu_e)×[script B](f₀-->pi⁺pi^-)=(0.13±0.04±0.01)%. This is the first absolute product branching fraction determination for a semileptonic decay including a scalar meson in the final state.

©2009 The American Physical Society

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