tau - Particle Data Group

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)
CONSTRAINED FIT INFORMATION
An overall fit to 64 branching ratios uses 136 measurements and
one constraint to determine 31 parameters. The overall fit has a
χ 2 = 121.4 for 106 degrees of freedom.
The following 〉 off-diagonal array elements are the correlation coefficients
〈δx i δx j /(δx i·δx j ), in percent, from the fit to the branching fractions, x i ≡
Γ i /Γ total . The fit constrains the x i whose labels appear in this array to sum to
one.
x 5 11
x 9 −4 −5
x 10 −1 1 −22
x 14 −16 −16 −15 0
x 16 0 1 −1 −1 −6
x 20 −4 −7 −11 −6 −50 −2
x 23 −1 0 −1 −2 −1 −11 −9
x 27 −2 −3 −10 −1 −1 0 −26 −1
x 28 −1 0 0 −2 1 −11 −6 −18 −11
x 30 −2 −3 −12 1 −10 −1 12 −2 −40 1
x 35 −8 −6 −7 −1 −1 0 −12 0 −5 0
x 37 −2 −2 −1 −1 0 −6 −1 −10 1 −10
x 40 −7 −5 −6 0 −1 1 −9 2 −6 2
x 42 −1 −1 0 −2 1 −8 1 −13 1 −13
x 47 −1 0 0 0 0 0 −1 0 0 0
x 48 −6 −5 −6 −1 −1 1 −9 1 −4 1
x 62 −9 −7 2 0 1 1 −24 1 −14 1
x 70 −4 −4 −5 3 −7 1 −2 1 −3 0
x 77 1 0 −2 −1 −3 0 3 −1 4 −1
x 78 0 0 0 0 1 0 −2 0 −1 0
x 85 −3 −1 −1 −1 2 0 −10 0 −5 0
x 89 0 1 0 0 2 0 −4 0 −2 0
x 93 −2 −1 −1 −1 1 0 −9 0 −4 0
x 94 0 0 0 0 0 0 −1 0 0 0
x 103 1 0 1 −1 −1 −1 2 −1 2 0
x 104 −1 0 −1 0 −2 0 2 0 1 0
x 126 −1 −1 −1 0 0 0 −3 0 0 0
x 128 0 0 0 0 0 0 0 0 0 0
x 150 −4 −3 −4 1 −3 0 −5 0 −3 0
x 152 0 −1 −4 −1 −4 −1 1 −1 4 −2
x 3 x 5 x 9 x 10 x 14 x 16 x 20 x 23 x 27 x 28
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