Search for lepton flavor violating τ- decays with a KS0 meson

Y Miyazaki; K Abe; K Abe; H Aihara; D Anipko; K Arinstein; V Aulchenko; T Aushev; AM Bakich; M Barbero; I Bedny; K Belous; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bračko; TE Browder; A Chen; WT Chen; R Chistov; Y Choi; YK Choi; A Chuvikov; S Cole; J Dalseno; M Danilov; M Dash; J Dragic; S Eidelman; D Epifanov; N Gabyshev; T Gershon; A Gorišek; H Ha; K Hayasaka; H Hayashii; M Hazumi; D Heffernan; T Hokuue; Y Hoshi; S Hou; T Iijima; A Imoto; K Inami; A Ishikawa; R Itoh; M Iwasaki; Y Iwasaki; JH Kang; P Kapusta; H Kawai; HR Khan; H Kichimi; HO Kim; S Korpar; P Krokovny; R Kumar; CC Kuo; A Kuzmin; YJ Kwon; J Lee; T Lesiak; SW Lin; F Mandl; T Matsumoto; S McOnie; W Mitaroff; H Miyake; H Miyata; E Nakano; M Nakao; S Nishida; O Nitoh; S Noguchi; S Ogawa; T Ohshima; T Okabe; S Okuno; Y Onuki; H Ozaki; H Palka; H Park; LS Peak; R Pestotnik; LE Piilonen; A Poluektov; Y Sakai; T Schietinger; O Schneider; R Seidl; K Senyo; ME Sevior; M Shapkin; H Shibuya; B Shwartz; V Sidorov; JB Singh; A Somov

Journal article

Search for lepton flavor violating τ- decays with a KS0 meson

Y Miyazaki, K Abe, K Abe, H Aihara, D Anipko, K Arinstein, V Aulchenko, T Aushev, AM Bakich, M Barbero, I Bedny, K Belous, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bračko, TE Browder, A Chen Show all

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics | Published : 2006

DOI: 10.1016/j.physletb.2006.05.086

Abstract

We have searched for the lepton flavor violating decays τ- → ℓ- KS0 (ℓ = e or μ), using a data sample of 281 fb-1 collected with the Belle detector at the KEKB e+ e- asymmetric-energy collider. No evidence for a signal was found in either of the decay modes, and we set the following upper limits for the branching fractions: B (τ- → e- KS0) < 5.6 × 10-8 and B (τ- → μ- KS0) < 4.9 × 10-8 at the 90% confidence level. These results improve the previously published limits set by the CLEO Collaboration by factors of 16 and 19, respectively. © 2006 Elsevier B.V. All rights reserved.