${{\mathit \tau}}$ MEAN LIFE

INSPIRE   PDGID:
S035T
VALUE ($ 10^{-15} $ s) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 290.3 \pm0.5}$ OUR AVERAGE
$290.17$ $\pm0.53$ $\pm0.33$ 1.1M
BELOUS
2014
BELL 711 fb${}^{-1}{\it{}E}^{\it{}ee}_{\rm{}cm}$=10.6 GeV
$290.9$ $\pm1.4$ $\pm1.0$
ABDALLAH
2004T
DLPH 1991-1995 LEP runs
$293.2$ $\pm2.0$ $\pm1.5$
ACCIARRI
2000B
L3 1991--1995 LEP runs
$290.1$ $\pm1.5$ $\pm1.1$
BARATE
1997R
ALEP 1989--1994 LEP runs
$289.2$ $\pm1.7$ $\pm1.2$
ALEXANDER
1996E
OPAL 1990--1994 LEP runs
$289.0$ $\pm2.8$ $\pm4.0$ 57.4k
BALEST
1996
CLEO ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $10.6$ GeV
• • We do not use the following data for averages, fits, limits, etc. • •
$291.2$ $\pm2.0$ $\pm1.2$
BARATE
1997I
ALEP Repl. by BARATE 1997R
$291.4$ $\pm3.0$
ABREU
1996B
DLPH Repl. by ABDALLAH 2004T
$290.1$ $\pm4.0$ 34k
ACCIARRI
1996K
L3 Repl. by ACCIARRI 2000B
$297$ $\pm9$ $\pm5$ 1671
ABE
1995Y
SLD 1992--1993 SLC runs
$304$ $\pm14$ $\pm7$ 4100
BATTLE
1992
CLEO ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $10.6$ GeV
$301$ $\pm29$ 3780
KLEINWORT
1989
JADE ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 35$-$46 GeV
$288$ $\pm16$ $\pm17$ 807
AMIDEI
1988
MRK2 ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 29 GeV
$306$ $\pm20$ $\pm14$ 695
BRAUNSCHWEIG
1988C
TASS ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 36 GeV
$299$ $\pm15$ $\pm10$ 1311
ABACHI
1987C
HRS ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 29 GeV
$295$ $\pm14$ $\pm11$ 5696
ALBRECHT
1987P
ARG ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 9.3$-$10.6 GeV
$309$ $\pm17$ $\pm7$ 3788
BAND
1987B
MAC ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 29 GeV
$325$ $\pm14$ $\pm18$ 8470
BEBEK
1987C
CLEO ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 10.5 GeV
$460 \pm190$ 102
FELDMAN
1982
MRK2 ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 29 GeV
References