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 ( K − π + π − π 0 ν τ (ex.K 0 ) ) /Γ total Γ 88 /Γ = (Γ 89 +0.226Γ 128 )/Γ Data marked “avg” are highly correlated with data appearing elsewhere in the Listings, and are therefore used for the average given below but not in the overall fits. “f&a” marks results used for the fit and the average. VALUE (units 10 −4 ) CL% DOCUMENT ID TECN COMMENT (8.1+-1.2) OUR FIT (7.3+-1.2) OUR AVERAGE 7.4±0.8±1.1 f&a 1 ARMS 05 CLE3 7.6 fb −1 , E ee cm =10.6 GeV 6.1±3.9±1.8 f&a BARATE 98 ALEP 1991–1995 LEP runs •••We use the following data for averages but not for fits. ••• 7.5±2.6±1.8 avg 2 RICHICHI 99 CLEO E ee cm =10.6 GeV •••We do not use the following data for averages, fits, limits, etc. •••
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 − K + π − ) ν τ /Γtotal Γ 93 /Γ Data marked “avg” are highly correlated with data appearing elsewhere in the Listings, and are therefore used for the average given below but not in the overall fits. “f&a” marks results used for the fit and the average. VALUE (units 10 −3 ) EVTS DOCUMENT ID TECN COMMENT 1.44 ±0.05 OUR FIT Error includes scale factor of 1.9. 1.43 ±0.07 OUR AVERAGE Error includes scale factor of 2.4. See the ideogram below. 1.55 ±0.01 +0.06 −0.05 f&a 108k 1 LEE 10 BELL 666 fb −1 E ee cm =10.6 GeV 1.346±0.010±0.036 f&a 18k 2 AUBERT 08 BABR 342 fb −1 E ee cm = 10.6 GeV 1.55 ±0.06 ±0.09 f&a 932 3 BRIERE 03 CLE3 E ee cm = 10.6 GeV 1.63 ±0.21 ±0.17 f&a BARATE 98 ALEP 1991–1995 LEP runs •••We use the following data for averages but not for fits. ••• 0.87 ±0.56 ±0.40 avg ABBIENDI 00D OPAL 1990–1995 LEP runs 1.45 ±0.13 ±0.28 avg 2.3k 4 RICHICHI 99 CLEO E ee cm = 10.6 GeV •••We do not use the following data for averages, fits, limits, etc. ••• 2.2 +1.7 −1.1 ±0.5 9 5 MILLS 85 DLCO E ee cm =29GeV 1 See footnote to LEE 10 Γ(τ − → π − π + π − ντ (ex.K 0 ))/Γ total measurement for correlations with other measurements. Not independent of LEE 10 Γ(τ − → K − K + π − ν τ )/Γ(τ − → π − π + π − ν τ (ex.K 0 )) value. 2 See footnote to AUBERT 08 Γ(τ − → π − π + π − ντ (ex.K 0 ))/Γ total measurement for correlations with other measurements. 3 71% correlated with BRIERE 03 τ − → π − π + π − ντ and 34% correlated with τ → K − π + π − ν τ because of a common 5% normalization error. 4 Not independent of RICHICHI 99 Γ(τ − → K − K + π − ντ )/ Γ(τ − → π − π + π − ν τ (ex.K 0 )) and BALEST 95C Γ(τ − → h − h − h + ν τ (ex.K 0 ))/Γ total values. 5 Error correlated with MILLS 85 (K πππ 0 ν) value. We multiply 0.22% by 0.23, the relative systematic error quoted by MILLS 85, to obtain the systematic error. HTTP://PDG.LBL.GOV Page 47 Created: 6/16/2011 12:05
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