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ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2006, vol. 643, p. 5-10

First observation of the decay τ- → φ{symbol} K- ντ

Inami K., Abe K., Abe K., Adachi I., Aihara H., Anipko D., Arinstein K., Aulchenko V., Aushev T., Bahinipati S., Bakich A. M., Barberio E., Barbero M., Bedny I., Bizjak I., Bondar A., Bozek A., Bračko M., Browder T. E., Chen A., Chen K. F., Chen W. T., Chistov R., Choi Y., Choi Y. K., Dalseno J., Danilov M., Drutskoy A., Eidelman S., Epifanov D., Fratina S., Gabyshev N., Gershon T., Gokhroo G., Ha H., Haba J., Hara K., Hayasaka K., Hayashii H., Hazumi M., Heffernan D., Hokuue T., Hoshi Y., Hou S., Hou W. S., Hsiung Y. B., Iijima T., Ishikawa A., Itoh R.

We present the first observation of τ lepton decays to hadronic final states with a φ{symbol}-meson. This analysis is based on 401 fb-1 of data accumulated at the Belle experiment. The branching fraction obtained is B (τ- → φ{symbol} K- ντ) = (4.05 ± 0.25 ± 0.26) × 10-5. © 2006 Elsevier B.V. All rights reserved.