tau - Particle Data Group

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Citation: K. Nakamura et al. (Particle Data Group), JP G 37, 075021 (2010) and 2011 partial update for the 2012 edition (URL: http://pdg.lbl.gov) Γ ( h − h − h + ≥ 2π 0 ν τ (ex. K 0 ) ) /Γ total Γ 74 /Γ = (Γ 77 +Γ 78 +0.226Γ 126 +0.888Γ 152 )/Γ VALUE (%) EVTS DOCUMENT ID TECN COMMENT 0.517±0.033 OUR FIT 0.561±0.068±0.095 1.3k 1 ABDALLAH 06A DLPH 1992–1995 LEP runs 1 See footnote to ABDALLAH 06A Γ(τ − → h − ντ )/Γ total measurement for correlations with other measurements. Γ ( h − h − h + 2π 0 ) ν τ /Γtotal Γ 75 /Γ Γ 75 /Γ = (0.4307Γ 47 +Γ 77 +0.226Γ 126 +0.888Γ 152 )/Γ VALUE (%) 0.505±0.032 OUR FIT DOCUMENT ID Γ ( h − h − h + 2π 0 ν τ (ex.K 0 ) ) /Γ total Γ 76 /Γ Γ 76 /Γ = (Γ 77 +0.226Γ 126 +0.888Γ 152 )/Γ VALUE (%) EVTS DOCUMENT ID TECN COMMENT 0.495±0.032 OUR FIT 0.435±0.030±0.035 2.6k 1 SCHAEL 05C ALEP 1991-1995 LEP runs •••We do not use the following data for averages, fits, limits, etc. ••• 0.50 ±0.07 ±0.07 1.8k BUSKULIC 96 ALEP Repl. by SCHAEL 05C 1 SCHAEL 05C quote (0.392 ± 0.030 ± 0.035)%. We add 0.043% to remove their correction for τ − → π − ηπ 0 ν τ → π − π + π − 2π 0 ν τ and τ − → K ∗ (892) − ην τ → K − π + π − 2π 0 ν τ decays. See footnote to SCHAEL 05C Γ(τ − → e − ν e ν τ )/Γ total measurement for correlations with other measurements. Γ ( h − h − h + 2π 0 ν τ (ex.K 0 ) ) /Γ ( h − h − h + ≥ 0neutrals ≥ 0K 0 L ν ) τ Γ 76 /Γ 54 Γ 76 /Γ 54 =(Γ 77 +0.226Γ 126 +0.888Γ 152 )/(0.3431Γ 35 +0.3431Γ 37 +0.3431Γ 40 + 0.3431Γ 42 +0.4307Γ 47 +0.6861Γ 48 +Γ 62 +Γ 70 +Γ 77 +Γ 78 +Γ 85 +Γ 89 +Γ 93 +Γ 94 + 0.285Γ 126 +0.285Γ 128 +0.9101Γ 150 +0.9101Γ 152 ) VALUE EVTS DOCUMENT ID TECN COMMENT 0.0326±0.0021 OUR FIT 0.034 ±0.002 ±0.003 668 BORTOLETTO93 CLEO E ee cm ≈ 10.6 GeV Γ ( h − h − h + 2π 0 ν τ (ex.K 0 ,ω,η) ) /Γ total Γ 77 /Γ VALUE (units 10 −4 ) 10±4 OURFIT DOCUMENT ID Γ ( h − h − h + 3π 0 ) ν τ /Γtotal Γ 78 /Γ VALUE (units 10 −4 ) CL% EVTS DOCUMENT ID TECN COMMENT (2.3+-0.6) OUR FIT Error includes scale factor of 1.2. 2.2 ±0.3 ±0.4 139 ANASTASSOV 01 CLEO E ee cm =10.6 GeV •••We do not use the following data for averages, fits, limits, etc. ••• < 4.9 95 SCHAEL 05C ALEP 1991-1995 LEP runs 2.85±0.56±0.51 57 ANDERSON 97 CLEO Repl. by ANAS- TASSOV 01 11 ±4 ±5 440 1 BUSKULIC 96 ALEP Repl. by SCHAEL 05C 1 BUSKULIC 96 state their measurement is for B(h − h − h + ≥ 3π 0 ντ ). We assume that B(h − h − h + ≥ 4π 0 ν τ )isverysmall. HTTP://PDG.LBL.GOV Page 42 Created: 6/16/2011 12:05

Citation: K. Nakamura et al. (Particle Data Group), JP G 37, 075021 (2010) and 2011 partial update for the 2012 edition (URL: http://pdg.lbl.gov) Γ ( K − h + h − ) ≥ 0neutralsν τ /Γtotal Γ 79 /Γ = (0.3431Γ 37 +0.3431Γ 42 +Γ 85 +Γ 89 +Γ 93 +Γ 94 +0.285Γ 128 )/Γ VALUE (%) CL% DOCUMENT ID TECN COMMENT 0.635±0.024 OUR FIT Error includes scale factor of 1.5.

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