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ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2011, vol. 699, p. 251-257

Search for lepton-flavor-violating τ decays into a lepton and a vector meson

Miyazaki Y., Aihara H., Arinstein K., Aulchenko V., Bakich A. M., Balagura V., Barberio E., Bay A., Belous K., Bhardwaj V., Bischofberger M., Bondar A., Bozek A., Bračko M., Browder T. E., Chen A., Chen P., Cheon B. G., Chiang C. C., Cho I. S., Cho K., Choi K. S., Choi Y., Dalseno J., Danilov M., Doležal Z., Drutskoy A., Eidelman S., Epifanov D., Gabyshev N., Garmash A., Golob B., Ha H., Haba J., Hara K., Hayasaka K., Hayashii H., Horii Y., Hoshi Y., Hou W. S., Hsiung Y. B., Hyun H. J., Iijima T., Inami K., Itoh R., Iwabuchi M., Joshi N. J., Julius T., Kah D. H., Kang J. H., Kawai H., Kawasaki T., Kiesling C., Kim H. J., Kim H. O., Kim M. J., Kim Y. J., Kinoshita K., Ko B. R., Križan P., Kumita T., Kuzmin A., Kwon Y. J., Kyeong S. H., Lange J. S., Lee M. J., Lee S. H., Li Y., Liu C., Liu Y., Liventsev D., Louvot R., McOnie S., Miyabayashi K., Miyata H., Mizuk R., Mohanty G. B., Moll A., Mori T., Nagasaka Y., Nakano E., Nakao M., Nakazawa H., Natkaniec Z., Nishida S., Nitoh O., Ogawa S.

We search for lepton-flavor-violating τ→ℓV0 decays, where ℓ is an electron or muon and V0 is one of the vector mesons ρ0, φ, ω, K*0 and K*0. We use 854 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No evidence for a signal is found in any decay mode, and we obtain 90% confidence level upper limits on the individual branching fractions in the range (1.2-8.4)×10-8. © 2011 Elsevier B.V.