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Citation: K. Nakamura et al. (<strong>Particle</strong> <strong>Data</strong> <strong>Group</strong>), JP G 37, 075021 (2010) and 2011 partial update for the 2012 edition (URL: http://pdg.lbl.gov)<br />
Γ ( K − π + π − ) ν τ /Γtotal<br />
VALUE (%)<br />
DOCUMENT ID<br />
0.349±0.016 OUR FIT Error includes scale factor of 1.9.<br />
Γ 84 /Γ = (0.3431Γ 37 +Γ 85 )/Γ<br />
Γ ( K − π + π − ν τ (ex.K 0 ) ) /Γ total Γ 85 /Γ<br />
<strong>Data</strong> marked “avg” are highly correlated with data appearing elsewhere in the Listings,<br />
and are therefore used for the average given below but not in the overall fits. “f&a”<br />
marks results used for the fit and the average.<br />
VALUE (%) EVTS DOCUMENT ID TECN COMMENT<br />
0.294±0.015 OUR FIT Error includes scale factor of 2.2.<br />
0.290±0.018 OUR AVERAGE Error includes scale factor of 2.4. See the ideogram below.<br />
0.330±0.001 +0.016<br />
−0.017 f&a 794k 1 LEE 10 BELL 666 fb −1 E ee<br />
cm =10.6 GeV<br />
0.273±0.002±0.009 f&a 70k 2 AUBERT 08 BABR 342 fb −1 E ee<br />
cm =10.6 GeV<br />
0.415±0.053±0.040 f&a 269 ABBIENDI 04J OPAL 1991-1995 LEP runs<br />
0.384±0.014±0.038 f&a 3.5k 3 BRIERE 03 CLE3 E ee<br />
cm = 10.6 GeV<br />
0.214±0.037±0.029 f&a BARATE 98 ALEP 1991–1995 LEP runs<br />
•••We use the following data for averages but not for fits. •••<br />
0.346±0.023±0.056 avg 158 4 RICHICHI 99 CLEO E ee<br />
cm = 10.6 GeV<br />
•••We do not use the following data for averages, fits, limits, etc. •••<br />
0.360±0.082±0.048 ABBIENDI 00D OPAL 1990–1995 LEP runs<br />
1 See footnote to LEE 10 Γ(τ − → π − π + π − ντ (ex.K 0 ))/Γ total measurement for<br />
correlations with other measurements. Not independent of LEE 10 Γ(τ − →<br />
K − π + π − ν τ (ex.K 0 ))/Γ(τ − → π − π + π − ν τ (ex.K 0 )) value.<br />
2 See footnote to AUBERT 08 Γ(τ − → π − π + π − ντ (ex.K 0 ))/Γ total measurement for<br />
correlations with other measurements.<br />
3 47% correlated with BRIERE 03 τ − → π − π + π − ντ and 34% correlated with τ − →<br />
K − K + π − ν τ because of a common 5% normalization error.<br />
4 Not independent of RICHICHI 99<br />
Γ(τ − → K − h + π − ν τ (ex.K 0 ))/Γ(τ − → π − π + π − ν τ (ex.K 0 )), Γ(τ − →<br />
K − K + π − ν τ )/Γ(τ − → π − π + π − ν τ (ex.K 0 )) and BALEST 95C Γ(τ − →<br />
h − h − h + ν τ (ex.K 0 ))/Γ total values.<br />
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