First observation of the decay τ−→ϕK−ντ

Belle Collaboration; K Inami; K Abe; K Abe; I Adachi; H Aihara; D Anipko; K Arinstein; V Aulchenko; T Aushev; S Bahinipati; AM Bakich; E Barberio; M Barbero; I Bedny; I Bizjak; A Bondar; A Bozek; M Bračko; TE Browder; A Chen; K-F Chen; WT Chen; R Chistov; Y Choi; YK Choi; J Dalseno; M Danilov; A Drutskoy; S Eidelman; D Epifanov; S Fratina; N Gabyshev; T Gershon; G Gokhroo; H Ha; J Haba; K Hara; K Hayasaka; H Hayashii; M Hazumi; D Heffernan; T Hokuue; Y Hoshi; S Hou; W-S Hou; YB Hsiung; T Iijima; A Ishikawa; R Itoh; Y Iwasaki; JH Kang; P Kapusta; SU Kataoka; H Kawai; T Kawasaki; HR Khan; H Kichimi; YJ Kim; S Korpar; P Križan; P Krokovny; R Kulasiri; R Kumar; A Kuzmin; Y-J Kwon; G Leder; T Lesiak; S-W Lin; D Liventsev; G Majumder; F Mandl; T Matsumoto; A Matyja; S McOnie; W Mitaroff; H Miyake; H Miyata; Y Miyazaki; R Mizuk; J Mueller; Y Nagasaka; I Nakamura; E Nakano; M Nakao; S Nishida; O Nitoh; S Ogawa; T Ohshima; S Okuno; Y Onuki; H Ozaki; H Palka; CW Park; H Park; LS Peak; LE Piilonen; A Poluektov; Y Sakai; T Schietinger; O Schneider; AJ Schwartz; R Seidl; K Senyo; ME Sevior; H Shibuya; B Shwartz; V Sidorov; JB Singh; A Somov; N Soni; S Stanič; M Starič; H Stoeck; SY Suzuki; O Tajima; N Tamura; M Tanaka; GN Taylor; Y Teramoto; XC Tian; T Tsukamoto; S Uehara; K Ueno; T Uglov; S Uno; P Urquijo; Y Usov; G Varner; S Villa; E Won; C-H Wu; BD Yabsley; A Yamaguchi; Y Yamashita; LM Zhang; V Zhilich; A Zupanc

Journal article

First observation of the decay τ−→ϕK−ντ

Belle Collaboration, K Inami, K Abe, K Abe, I Adachi, H Aihara, D Anipko, K Arinstein, V Aulchenko, T Aushev, S Bahinipati, AM Bakich, E Barberio, M Barbero, I Bedny, I Bizjak, A Bondar, A Bozek, M Bračko, TE Browder Show all

Physics Letters B | Elsevier | Published : 2006

DOI: 10.1016/j.physletb.2006.10.027

Abstract

We present the first observation of τ lepton decays to hadronic final states with a ϕ-meson. This analysis is based on 401 fb−1 of data accumulated at the Belle experiment. The branching fraction obtained is B(τ−→ϕK−ντ)=(4.05±0.25±0.26)×10−5.