Abstract
We examine e(+)e(-) -> Ds-Ds*+ and Ds*-Ds+ interactions at 4170 MeV using the CLEO-c detector in order to measure the decay constant fD(s)(+). We use the D-s(+) -> l(+)nu channel, where the l(+) designates either a mu(+) or a tau(+), when the tau(+) -> pi(+), when the tau(+) -> pi(+)(v) over bar .Analyzing both modes independently, we determine B(D-s(+) -> mu(+)nu)=(0.594 +/- 0.066 +/- 0.031)%, and B(D-s(+) ->tau(+)nu)=(8.0 +/- 1.3 +/- 0.4)%. We also analyze them simultaneously to find an effective value of Beff(D-s(+) ->mu(+)nu)=(0.638 +/- 0.059 +/- 0.033)% and extract fD(s)(+)=274 +/- 13 +/- 7 MeV. Combining with our previous determination of B(D+ -> mu(+)nu), we also find the ratio fD(s)(+)/fD(+)=1.23 +/- 0.11 +/- 0.04. We compare to current theoretical estimates. Finally, we find B(D-s(+) -> e(+)nu)< 1.3X10(-4) at 90% confidence level.
Published in:
Physical Review D 76,7 (2007)
Link to original published article:
http://dx.doi.org/10.1103/PhysRevD.76.072002
Keywords
Astronomy & Astrophysics;; Physics, Particles & Fields
Date of Version
January 2007
Recommended Citation
Pedlar, T. K.; Cronin-Hennessy, D.; Gao, K. Y.; Hietala, J.; Kubota, Y.; Klein, T.; Lang, B. W.; Poling, R.; Scott, A. W.; Smith, A.; Zweber, P.; Dobbs, S.; Metreveli, Z.; Seth, K. K.; Tomaradze, A.; Ernst, J.; Ecklund, K. M.; Severini, H.; Love, W.; Savinov, V.; Aquines, O.; Lopez, A.; Mehrabyan, S.; Mendez, H.; Ramirez, J.; Huang, G. S.; Miller, D. H.; Pavlunin, V.; Sanghi, B.; Shipsey, I. P. J.; Xin, B.; Adams, G. S.; Anderson, M.; Cummings, J. P.; Danko, I.; Hu, D.; Moziak, B.; Napolitano, J.; He, Q.; Insler, J.; Muramatsu, H.; Park, C. S.; Thorndike, E. H.; Yang, F.; Artuso, M.; Blusk, S.; Butt, J.; Khalil, S.; Li, J.; Menaa, N.; Mountain, R.; Nisar, S.; Randrianarivony, K.; Sia, R.; Skwarnicki, T.; Stone, S.; Wang, J. C.; Bonvicini, G.; Cinabro, D.; Dubrovin, M.; Lincoln, A.; Asner, D. M.; Edwards, K. W.; Naik, P.; Briere, R. A.; Ferguson, T.; Tatishvili, G.; Vogel, H.; Watkins, M. E.; Rosner, J. L.; Adam, N. E.; Alexander, J. P.; Cassel, D. G.; Duboscq, J. E.; Ehrlich, R.; Fields, L.; Gibbons, L.; Gray, R.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Hertz, D.; Jones, C. D.; Kandaswamy, J.; Kreinick, D. L.; Kuznetsov, V. E.; Mahlke-Kruger, H.; Mohapatra, D.; Onyisi, P. U. E.; Patterson, J. R.; Peterson, D.; Pivarski, J.; Riley, D.; Ryd, A.; Sadoff, A. J.; Schwarthoff, H.; Shi, X.; Stroiney, S.; Sun, W. M.; Wilksen, T.; Athar, S. B.; Patel, R.; Yelton, J.; Rubin, P.; Cawlfield, C.; Eisenstein, B. I.; Karliner, I.; Kim, D.; Lowrey, N.; Selen, M.; White, E. J.; Wiss, J.; Mitchell, R. E.; Shepherd, M. R.; and Besson, D., "Measurement of B(D-s(+)-> l(+)nu) and the decay constant f(Ds)(+)" (2007). Department of Physics and Astronomy Faculty Publications. Paper 812.
https://docs.lib.purdue.edu/physics_articles/812