Study of the five-charged-pion decay of the τ lepton Article

Gibaut, D, Kinoshita, K, Barish, B et al. (1994). Study of the five-charged-pion decay of the τ lepton . PHYSICAL REVIEW LETTERS, 73(7), 934-938. 10.1103/PhysRevLett.73.934

cited authors

  • Gibaut, D; Kinoshita, K; Barish, B; Chadha, M; Chan, S; Cowen, DF; Eigen, G; Miller, JS; O'Grady, C; Urheim, J; Weinstein, AJ; Acosta, D; Athanas, M; Masek, G; Paar, HP; Gronberg, J; Kutschke, R; Menary, S; Morrison, RJ; Nakanishi, S; Nelson, HN; Nelson, TK; Qiao, C; Richman, JD; Ryd, A; Tajima, H; Sperka, D; Witherell, MS; Procario, M; Balest, R; Cho, K; Daoudi, M; Ford, WT; Johnson, DR; Lingel, K; Lohner, M; Rankin, P; Smith, JG; Alexander, JP; Bebek, C; Berkelman, K; Bloom, K; Browder, TE; Cassel, DG; Cho, HA; Coffman, DM; Crowcroft, DS; Drell, PS; Ehrlich, R; Gaidarev, P; Galik, RS; Garcia-Sciveres, M; Geiser, B; Gittelman, B; Gray, SW; Hartill, DL; Heltsley, BK; Jones, CD; Jones, SL; Kandaswamy, J; Katayama, N; Kim, PC; Kreinick, DL; Ludwig, GS; Masui, J; Mevissen, J; Mistry, NB; Ng, CR; Nordberg, E; Patterson, JR; Peterson, D; Riley, D; Salman, S; Sapper, M; Würthwein, F; Avery, P; Freyberger, A; Rodriguez, J; Stephens, R; Yang, S; Yelton, J; Cinabro, D; Henderson, S; Liu, T; Saulnier, M; Wilson, R; Yamamoto, H; Bergfeld, T; Eisenstein, BI; Gollin, G; Ong, B; Palmer, M; Selen, M; Thaler, JJ; Edwards, KW; Ogg, M; Bellerive, A; Britton, DI; Hyatt, ERF; MacFarlane, DB

authors

abstract

  • The branching fractions for the five-charged-particle decays of the τ lepton have been measured in e+e- annihilations using the CLEO II detector at the Cornell Electron Storage Ring. Assuming all charged particles to be pions, the results are B(3π-2π+0 neutrals ντ)=(0.097±0. 005±0.011)%, B(3π-2π+ντ)=(0.077±0.005 ±0.009)%, B(3π-2π+π0ντ)=(0.019±0.004±0.004) %, and B(3π-2π+2π0ντ)<0.011% at the 90% C.L. B(3π-2π-π0ντ) is measured for the first time by exclusive π0 reconstruction. The results are compared with the predictions from the partially conserved-axial-current and conserved-vector-current hypotheses assuming isospin invariance. © 1994 The American Physical Society.

publication date

  • January 1, 1994

published in

Digital Object Identifier (DOI)

start page

  • 934

end page

  • 938

volume

  • 73

issue

  • 7