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Search for B --> tau(nu) and B --> K(nu)nu |
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| Authors: | Browder T E Li Y Rodriguez J L Yamamoto H Bergfeld T Eisenstein B I Ernst J Gladding G E Gollin G D Hans R M Johnson E Karliner I Marsh M A Palmer M Plager C Sedlack C Selen M Thaler J J Williams J Edwards K W Janicek R Patel P M Sadoff A J Ammar R Bean A Besson D Davis R Kwak N Zhao X Anderson S Frolov V V Kubota Y Lee S J Mahapatra R O'Neill J J Poling R Riehle T Smith A Stepaniak C J Urheim J Ahmed S Alam M S Athar S B Jian L Ling L Saleem M Timm S Wappler F Anastassov A Duboscq J E Eckhart E Gan K K Gwon C Hart T Honscheid K Hufnagel D Kagan H Kass R Pedlar T K Schwarthoff H Thayer J B |
| Affiliation: | University of Hawaii at Monoa, Honolulu 96822, USA. |
| Abstract: | We report results of a search for B-->tau(nu) in a sample of 9.7 x 10(6) charged B meson decays. We exclusively reconstruct the companion B decay to suppress background. We set an upper limit on the branching fraction B(B-->tau(nu))<8.4 x 10(-4) at 90% confidence level. We also establish B(B+/--->K+/-nu(nu))<2.4 x 10(-4) at 90% confidence level. |
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