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 in:
Physical Review D 81,5 (2010)
Link to original published article:
http://dx.doi.org/10.1103/PhysRevD.81.052007
Date of Version
March 2010
Recommended Citation
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., "Measurement of absolute branching fractions of inclusive semileptonic decays of charm
and charmed-strange mesons" (2010). Department of Physics and Astronomy Faculty Publications. Paper 1171.
https://docs.lib.purdue.edu/physics_articles/1171