51. Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons
- Author
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Asner, D. M., Edwards, K. W., Reed, J., Robichaud, A. N., Tatishvili, G., White, E. J., Briere, R. A., Vogel, H., Onyisi, P. U. E., Rosner, J. L., Alexander, J. P., Cassel, D. G., Das, S., Ehrlich, R., Fields, L., Gibbons, L., Gray, S. W., Hartill, D. L., Heltsley, B. K., Hunt, J. M., Kreinick, D. L., Kuznetsov, V. E., Ledoux, J., Patterson, J. R., Peterson, D., Riley, D., Ryd, A., Sadoff, A. J., Shi, X., Stroiney, S., Sun, W. M., Yelton, J., Rubin, P., Lowrey, N., Mehrabyan, S., Selen, M., Wiss, J., Kornicer, M., Mitchell, R. E., Shepherd, M. R., Tarbert, C. M., Besson, D., Pedlar, T. K., Xavier, J., Cronin-Hennessy, D., Gao, K. Y., Hietala, J., Poling, R., Zweber, P., Dobbs, S., Metreveli, Z., Seth, K. K., Tan, B. J. Y., Tomaradze, A., Brisbane, S., Libby, J., Martin, L., Powell, A., Spradlin, P., Wilkinson, G., Mendez, H., Ge, J. Y., Miller, D. H., Shipsey, I. P. J., Xin, B., Adams, G. S., Hu, D., Moziak, B., Napolitano, J., Ecklund, K. M., Insler, J., Muramatsu, H., Park, C. S., Thorndike, E. H., Yang, F., Ricciardi, S., Thomas, C., Artuso, M., Blusk, S., Khalil, S., Mountain, R., Randrianarivony, K., Skwarnicki, T., Stone, S., Wang, J. C., Zhang, L. M., Bonvicini, G., Cinabro, D., Lincoln, A., Smith, M. J., Zhou, P., Zhu, J., Naik, P., and Rademacker, J.
- Abstract
We have measured the inclusive semileptonic branching fractions of D-0, D+, and D-s(+) mesons. For these measurements, we have used the full CLEO-c open-charm data samples, 818 pb(-1) at E-CM = 3.774 GeV, giving D-0(D) over bar (0) and D+D- events, and 602 pb(-1) at E-CM = 4.170 GeV, giving D-s*D-+/-(s)-/+ events. We obtain B(D-0 -> Xe+nu(e)) = (6.46 +/- 0.09 +/- 0.11)%, B(D+ -> Xe+nu(e)) = (16.13 +/- 0.10 +/- 0.29)%, and B(D-s(+) -> Xe+nu(e)) = (6.52 +/- 0.39 +/- 0.15)%, where the first uncertainties are statistical and the second are systematic. From these and lifetimes obtained elsewhere, we obtain the ratios of semileptonic decay widths Gamma(D+ -> Xe+nu(e))/Gamma(D-0 -> Xe+nu(e)) = 0.985 +/- 0.015 +/- 0.024 and Gamma(D-s(+) -> Xe+nu(e))/Gamma(D-0 -> Xe+nu(e)) = 0.828 +/- 0.051 +/- 0.025. The ratio of D+ and D-0 is consistent with the isospin symmetry prediction of unity, and the ratio of D-s(+) and D-0 differs from unity, as expected.
- Published
- 2010