Phys. Rev. D
44,
3394–3401
(1991)
Measurement of the ratio B(D0→K*-e+νe)/B(D0→K-e+νe)
G. Crawford et al.
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G. Crawford, R. Fulton, K. K. Gan, T. Jensen, D. R. Johnson, H. Kagan, R. Kass, R. Malchow, F. Morrow, J. Whitmore, P. Wilson, D. Bortoletto, D. Brown, J. Dominick, R. L. McIlwain, D. H. Miller, M. Modesitt, C. R. Ng, S. F. Schaffner, E. I. Shibata, I. P. J. Shipsey, M. Battle, P. Kim, H. Kroha, K. Sparks, E. H. Thorndike, C. -H. Wang, M. S. Alam, I. J. Kim, B. Nemati, V. Romero, C. R. Sun, P. -N. Wang, M. M. Zoeller, M. Goldberg, T. Haupt, N. Horwitz, V. Jain, Rosemary Kennett, M. D. Mestayer, G. C. Moneti, Y. Rozen, P. Rubin, T. Skwarnicki, S. Stone, M. Thusalidas, W. -M. Yao, G. Zhu, A. V. Barnes, J. Bartelt, S. E. Csorna, T. Letson, J. Alexander, M. Artuso, C. Bebek, K. Berkelman, D. Besson, T. Browder, D. G. Cassel, E. Cheu, D. M. Coffman, P. S. Drell, R. Ehrlich, R. S. Galik, M. Garcia-Sciveres, B. Geiser, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, K. Honscheid, J. Kandaswamy, N. Katayama, D. L. Kreinick, J. D. Lewis, G. S. Ludwig, J. Masui, J. Mevissen, N. B. Mistry, S. Nandi, E. Nordberg, C. O'Grady, J. R. Patterson, D. Peterson, M. Pisharody, D. Riley, M. Sapper, M. Selen, A. Silverman, H. Worden, M. Worris, A. J. Sadoff, P. Avery, A. Freyberger, J. Rodriguez, J. Yelton, S. Henderson, K. Kinoshita, F. Pipkin, M. Procario, M. Saulnier, R. Wilson, J. Wolinski, D. Xiao, H. Yamamoto, R. Ammar, P. Baringer, D. Coppage, R. Davis, P. Haas, M. Kelly, N. Kwak, H. Lam, S. Ro, Y. Kubota, J. K. Nelson, D. Perticone, R. Poling, and S. Schrenk
aOhio State University, Columbus, Ohio 43210
bPurdue University, West Lafayette, Indiana 47907
cUniversity of Rochester, Rochester, New York 14627
dState University of New York at Albany, Albany, New York 12222
eSyracuse University, Syracuse, New York 13244
fVanderbilt University, Nashville, Tennessee 37235
gCornell University, Ithaca, New York 14853
hIthaca College, Ithaca, New York 14850
iUniversity of Florida, Gainesville, Florida 32611
jHarvard University, Cambridge, Massachusetts 02138
kUniversity of Kansas, Lawrence, Kansas 66045
lUniversity of Minnesota, Minneapolis, Minnesota 55455
Received 10 May 1991; published in the issue dated 1 December 1991
Using the CLEO detector at the Cornell Electron Storage Ring, we have performed a direct measurement of the ratio of D0 semileptonic branching fractions into vector and pseudoscalar final states. We find B(D0→K*-e+νe)/B(D0→K-e+νe)=0.51±0.18±0.06, in agreement with the ratio derived by the E691 experiment which compares D+ and D0 final states. We also set an upper limit on the ratio B(D0→K̅ *0π-e+νe)/B(D0→K*-e+νe)<0.64 at 90% confidence level.
© 1991 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.44.3394
DOI:
10.1103/PhysRevD.44.3394
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