You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
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 />
0.73 ±0.18 ±0.10 1 ALBRECHT 98 ARG E ee<br />
cm =9.5–10.6 GeV<br />
0.82 ±0.32 ±0.07 ABE 97O SLD 1993–1995 SLC runs<br />
0.786±0.041±0.032 22k ALEXANDER 97F CLEO E ee cm =10.6 GeV<br />
•••We do not use the following data for averages, fits, limits, etc. •••<br />
0.71 ±0.14 ±0.06 BUSKULIC 95D ALEP Repl. by HEISTER 01E<br />
1 ALBRECHT 98 use <strong>tau</strong> pair events of the type τ − τ + → (l − νl ν τ )(π + π 0 ν τ ), and<br />
their charged conjugates.<br />
ξ(π) PARAMETER<br />
(V −A) theory predicts ξ(π) =1.<br />
VALUE EVTS DOCUMENT ID TECN COMMENT<br />
0.993±0.022 OUR FIT<br />
0.994±0.023 OUR AVERAGE<br />
0.994±0.020±0.014 27k HEISTER 01E ALEP 1991–1995 LEP runs<br />
0.81 ±0.17 ±0.02 ABE 97O SLD 1993–1995 SLC runs<br />
1.03 ±0.06 ±0.04 2.0k COAN 97 CLEO E ee cm =10.6 GeV<br />
•••We do not use the following data for averages, fits, limits, etc. •••<br />
0.987±0.057±0.027 BUSKULIC 95D ALEP Repl. by HEISTER 01E<br />
0.95 ±0.11 ±0.05 1 BUSKULIC 94D ALEP 1990+1991 LEP run<br />
1 Superseded by BUSKULIC 95D.<br />
ξ(ρ) PARAMETER<br />
(V −A) theory predicts ξ(ρ) =1.<br />
VALUE EVTS DOCUMENT ID TECN COMMENT<br />
0.994±0.008 OUR FIT<br />
0.994±0.009 OUR AVERAGE<br />
0.987±0.012±0.011 59k HEISTER 01E ALEP 1991–1995 LEP runs<br />
0.99 ±0.12 ±0.04 ABE 97O SLD 1993–1995 SLC runs<br />
0.995±0.010±0.003 66k ALEXANDER 97F CLEO E ee cm =10.6 GeV<br />
1.022±0.028±0.030 1.7k 1 ALBRECHT 94E ARG E ee<br />
cm =9.4–10.6 GeV<br />
•••We do not use the following data for averages, fits, limits, etc. •••<br />
1.045±0.058±0.032 BUSKULIC 95D ALEP Repl. by HEISTER 01E<br />
1.03 ±0.11 ±0.05 2 BUSKULIC 94D ALEP 1990+1991 LEP run<br />
1 ALBRECHT 94E measure the square of this quantity and use the sign determined by<br />
ALBRECHT 90I to obtain the quoted result.<br />
2 Superseded by BUSKULIC 95D.<br />
ξ(a 1 ) PARAMETER<br />
(V −A) theory predicts ξ(a 1 )=1.<br />
VALUE EVTS DOCUMENT ID TECN COMMENT<br />
1.001±0.027 OUR FIT<br />
1.002±0.028 OUR AVERAGE<br />
1.000±0.016±0.024 35k 1 HEISTER 01E ALEP 1991–1995 LEP runs<br />
1.02 ±0.13 ±0.03 17.2k ASNER 00 CLEO E ee cm =10.6 GeV<br />
1.29 ±0.26 ±0.11 7.4k 2 ACKERSTAFF 97R OPAL 1992–1994 LEP runs<br />
0.85<br />
−0.17 +0.15 ±0.05 ALBRECHT 95C ARG E ee<br />
cm =9.5–10.6 GeV<br />
1.25 ±0.23 +0.15<br />
−0.08<br />
7.5k ALBRECHT 93C ARG E ee cm =9.4–10.6 GeV<br />
•••We do not use the following data for averages, fits, limits, etc. •••<br />
1.08<br />
−0.41 +0.46 +0.14<br />
−0.25<br />
2.6k 3 AKERS 95P OPAL Repl. by ACKER-<br />
STAFF 97R<br />
0.937±0.116±0.064 BUSKULIC 95D ALEP Repl. by HEISTER 01E<br />
HTTP://PDG.LBL.GOV Page 81 Created: 6/16/2011 12:05
Change language