Measurement Of The D-S(+)-]Eta-L(+)Nu And D-S(+)-]Eta'L(+)Nu Branching Ratios

G. Brandenburg,D. Cinabro,T. Liu,M. Saulnier,R. Wilson,H. Yamamoto,T. Bergfeld,B. Eisenstein,J. Ernst,G. Gladding, G. Gollin,M. Palmer,M. Selen,J. Thaler, K. Edwards,K. McLean,M. Ogg, A. Bellerive,D. Britton,E. Hyatt,R. Janicek, D. MacFarlane,P. Patel, B. Spaan,A. Sadoff,R. Ammar, P. Baringer,A. Bean,D. Besson,D. Coppage,N. Copty,R. Davis,N. Hancock,S. Kotov,I. Kravchenko,N. Kwak,Y. Kubota,M. Lattery,M. Momayezi,J. Nelson,S. Patton,R. Poling, V. Savinov,S. Schrenk,R. Wang,M. Alam,I. Kim,Z. Ling,A. Mahmood,J. O'Neill, H. Severini,C. Sun,F. Wappler,G. Crawford,J. Duboscq,R. Fulton,D. Fujino,K. Gan,K. Honscheid, H. Kagan, R. Kass,J. Lee,M. Sung,C. White, A. Wolf,M. Zoeller,X. Fu,B. Nemati,W. Ross, P. Skubic,M. Wood,M. Bishai,J. Fast,E. Gerndt,J. Hinson, T. Miao,D. Miller,M. Modesitt, E. Shibata,I. Shipsey, P. Wang, L. Gibbons,S. Johnson,Y. Kwon,S. Roberts,E. Thorndike,T. Coan,J. Dominick,V. Fadeyev, I. Korolkov,M. Lambrecht,S. Sanghera,V. Shelkov, T. Skwarnicki, R. Stroynowski, I. Volobouev,G. Wei,M. Artuso,M. Gao,M. Goldberg, D. He,N. Horwitz,S. Kopp, G. Moneti,R. Mountain, F. Muheim, Y. Mukhin,S. Playfer,S. Stone,X. Xing, J. Bartelt, S. Csorna,V. Jain,S. Marka, D. Gibaut, K. Kinoshita,P. Pomianowski,B. Barish,M. Chadha,S. Chan,D. Cowen,G. Eigen,J. Miller,C. O'Grady,J. Urheim,A. Weinstein, F. Würthwein,D. Asner,M. Athanas,D. Bliss, W. Brower,G. Masek, H. Paar, J. Gronberg,C. Korte,R. Kutschke,S. Menary,R. Morrison,S. Nakanishi,H. Nelson,T. Nelson,C. Qiao,J. Richman,D. Roberts, A. Ryd,H. Tajima,M. Witherell,R. Balest,K. Cho, W. Ford, M. Lohner,H. Park,P. Rankin,J. Smith, J. Alexander,C. Bebek,B. Berger,K. Berkelman, K. Bloom, T. Browder,D. Cassel,H. Cho,D. Coffman,D. Crowcroft,M. Dickson, P. Drell,D. Dumas,R. Ehrlich,R. Elia,P. Gaidarev, M. Garcia-Sciveres,B. Gittelman,S. Gray,D. Hartill, B. Heltsley,S. Henderson,C. Jones,S. Jones,J. Kandaswamy,N. Katayama, P. Kim,D. Kreinick,T. Lee,Y. Liu,G. Ludwig,J. Masui,J. Mevissen,N. Mistry,C. Ng,E. Nordberg,J. Patterson,D. Peterson,D. Riley, A. Soffer, P. Avery,A. Freyberger,K. Lingel, C. Prescott, J. Rodriguez,S. Yang, J. Yelton

PHYSICAL REVIEW LETTERS（1995）

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摘要

Using the CLEO II detector we measure B(D-s(+) --> eta e(+)nu)/B(D-s(+) --> phi e(+)nu) = 1.24 +/- 0.12 +/- 0.15, B(D-s(+) --> eta'e(+)nu)/B(D-s(+) --> phi e(+)nu) = 0.43 +/- 0.11 +/- 0.07, and B(D-s(+) --> eta'e(+)nu)/B(D-s(+) --> eta e(+)nu) = 0.35 +/- 0.09 +/- 0.07. We find the ratio of vector to pseudoscalar final states, B(D-s(+) --> phi e(+)nu)/B(D-s(+) --> (eta + eta')e(+)nu) = 0.60 +/- 0.06 +/- 0.06, which is similar to the ratio found in nonstrange D decays.

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