Measurement of the absolute branching fraction of Ds+ --> tau+ nutau decay

K M Ecklund; W Love; V Savinov; A Lopez; H Mendez; J Ramirez; J Y Ge; D H Miller; I P J Shipsey; B Xin; G S Adams; M Anderson; J P Cummings; I Danko; D Hu; B Moziak; J Napolitano; Q He; J Insler; H Muramatsu; C S Park; E H Thorndike; F Yang; M Artuso; S Blusk; S Khalil; J Li; R Mountain; S Nisar; K Randrianarivony; N Sultana; T Skwarnicki; S Stone; J C Wang; L M Zhang; G Bonvicini; D Cinabro; M Dubrovin; A Lincoln; J Rademacker; D M Asner; K W Edwards; P Naik; J Reed; R A Briere; T Ferguson; G Tatishvili; H Vogel; M E Watkins; J L Rosner; J P Alexander; D G Cassel; J E Duboscq; R Ehrlich; L Fields; L Gibbons; R Gray; S W Gray; D L Hartill; B K Heltsley; D Hertz; C D Jones; J Kandaswamy; D L Kreinick; V E Kuznetsov; H Mahlke-Krüger; D Mohapatra; P U E Onyisi; J R Patterson; D Peterson; D Riley; A Ryd; A J Sadoff; X Shi; S Stroiney; W M Sun; T Wilksen; S B Athar; R Patel; J Yelton; P Rubin; B I Eisenstein; I Karliner; S Mehrabyan; N Lowrey; M Selen; E J White; J Wiss; R E Mitchell; M R Shepherd; D Besson; T K Pedlar; D Cronin-Hennessy; K Y Gao; J Hietala; Y Kubota; T Klein; B W Lang; R Poling; A W Scott; P Zweber; S Dobbs; Z Metreveli; K K Seth; A Tomaradze; J Libby; A Powell; G Wilkinson; CLEO Collaboration

doi:10.1103/PhysRevLett.100.161801

Measurement of the absolute branching fraction of Ds+ --> tau+ nutau decay

Phys Rev Lett. 2008 Apr 25;100(16):161801. doi: 10.1103/PhysRevLett.100.161801. Epub 2008 Apr 21.

Authors

K M Ecklund¹, W Love, V Savinov, A Lopez, H Mendez, J Ramirez, J Y Ge, D H Miller, I P J Shipsey, B Xin, G S Adams, M Anderson, J P Cummings, I Danko, D Hu, B Moziak, J Napolitano, Q He, J Insler, H Muramatsu, C S Park, E H Thorndike, F Yang, M Artuso, S Blusk, S Khalil, J Li, R Mountain, S Nisar, K Randrianarivony, N Sultana, T Skwarnicki, S Stone, J C Wang, L M Zhang, G Bonvicini, D Cinabro, M Dubrovin, A Lincoln, J Rademacker, D M Asner, K W Edwards, P Naik, J Reed, R A Briere, T Ferguson, G Tatishvili, H Vogel, M E Watkins, J L Rosner, J P Alexander, D G Cassel, J E Duboscq, R Ehrlich, L Fields, L Gibbons, R Gray, S W Gray, D L Hartill, B K Heltsley, D Hertz, C D Jones, J Kandaswamy, D L Kreinick, V E Kuznetsov, H Mahlke-Krüger, D Mohapatra, P U E Onyisi, J R Patterson, D Peterson, D Riley, A Ryd, A J Sadoff, X Shi, S Stroiney, W M Sun, T Wilksen, S B Athar, R Patel, J Yelton, P Rubin, B I Eisenstein, I Karliner, S Mehrabyan, N Lowrey, M Selen, E J White, J Wiss, R E Mitchell, M R Shepherd, D Besson, T K Pedlar, D Cronin-Hennessy, K Y Gao, J Hietala, Y Kubota, T Klein, B W Lang, R Poling, A W Scott, P Zweber, S Dobbs, Z Metreveli, K K Seth, A Tomaradze, J Libby, A Powell, G Wilkinson; CLEO Collaboration

Affiliation

¹ State University of New York at Buffalo, Buffalo, New York 14260, USA.

PMID: 18518183
DOI: 10.1103/PhysRevLett.100.161801

Abstract

Using a sample of tagged D(s)(+) decays collected near the D(s)(*+/-)D(s)(-/+) peak production energy in e(+)e(-) collisions with the CLEO-c detector, we study the leptonic decay D(s)(+)-->tau(+)nu(tau) via the decay channel tau(+)-->e(+)nu(e)nu(tau). We measure B(D(s)(+)-->tau(+)nu(tau))=(6.17+/-0.71+/-0.34)%, where the first error is statistical and the second systematic. Combining this result with our measurements of D(s)(+)-->mu(+)nu(mu) and D(s)(+)-->tau(+)nu(tau) (via tau(+)-->pi(+)nu(tau)), we determine f(D(s))=(274+/-10+/-5) MeV.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.