Absolute branching fractions of Cabibbo-suppressed D→KK¯ decays

G. Bonvicini,D. Cinabro,M. Dubrovin,A. Lincoln, J. Rademacker,D. M. Asner, K. W. Edwards,P. Naik,J. Reed, R. A. Briere,T. Ferguson,G. Tatishvili,H. Vogel,M. E. Watkins,J. L. Rosner,J. P. Alexander,D. G. Cassel,J. E. Duboscq,R. Ehrlich,L. Fields, L. Gibbons,R. Gray, S. Gray,D. Hartill, B. Heltsley,D. Hertz, C. Jones,J. Kandaswamy,D. Kreinick,V. Kuznetsov,H. Mahlke-Krüger,D. Mohapatra,H. Miyake, P. Onyisi,J. Patterson, D. Peterson, D. Riley, A. Ryd, A. Sadoff, X. Shi,S. Stroiney, W. Sun,T. Wilksen,S. Athar, R. Patel, J. Yelton, P. Rubin,B. Eisenstein, I. Karliner,S. Mehrabyan, N. Lowrey,M. Selen,E. White,J. Wiss, R. Mitchell,M. Shepherd, D. Besson,T. Pedlar,D. Cronin-Hennessy,K. Gao,J. Hietala,Y. Kubota,T. Klein,B. Lang,R. Poling,A. Scott,P. Zweber,S. Dobbs,Z. Metreveli,K. Seth, A. Tomaradze,J. Libby,A. Powell, G. Wilkinson, K. Ecklund,W. Love, V. Savinov,A. Lopez,H. Mendez,J. Ramirez,J. Ge,D. Miller, I. Shipsey,B. Xin,G. Adams,M. Anderson,J. Cummings,I. Danko,D. Hu,B. Moziak,J. Napolitano,Q. He,J. Insler,H. Muramatsu,C. Park,E. Thorndike, F. Yang,M. Artuso,S. Blusk, S. Khalil,J. Li,R. Mountain,S. Nisar, K. Randrianarivony,N. Sultana, T. Skwarnicki,S. Stone,J. Wang, L. Zhang

PHYSICAL REVIEW D（2008）

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摘要

Using 281 pb(-1) of data collected with the CLEO-c detector at the psi(3770) resonance, we have studied Cabibbo-suppressed decays of D mesons to final states with two kaons. We present results for the absolute branching fractions of the modes D-0 -> K+K-, D-0 -> (KSKS0)-K-0, and D+-> (K+KS0). We measure B(D-0 -> K+K-) = (4.08 +/- 0.08 +/- 0.09) x 10(-3), B(D-0 -> (KSKS0)-K-0) = (1.46 +/- 0.32 +/- 0.09) x 10(-4), and B(D+-> (K+KS0)) = (3.14 +/- 0.09 +/- 0.08) x 10(-3). We also determine the ratio B(D-0 -> K+K-)/B(D-0 -> pi(+)pi(-)) = 2.89 +/- 0.05 +/- 0.06. For each measurement, the first uncertainty is statistical and the second uncertainty is systematic.

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