pdgLive

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

INSPIRE JSON (beta) PDGID:

VALUE ($ 10^{-15} $ s)

EVTS

DOCUMENT ID

TECN

COMMENT

$\bf{ 290.3 \pm0.5}$

OUR AVERAGE

$290.17$ $\pm0.53$ $\pm0.33$

1.1M

BELL

711 fb${}^{-1}{\it{}E}^{\it{}ee}_{\rm{}cm}$=10.6 GeV

$290.9$ $\pm1.4$ $\pm1.0$

DLPH

1991-1995 LEP runs

$293.2$ $\pm2.0$ $\pm1.5$

L3

1991--1995 LEP runs

$290.1$ $\pm1.5$ $\pm1.1$

ALEP

1989--1994 LEP runs

$289.2$ $\pm1.7$ $\pm1.2$

OPAL

1990--1994 LEP runs

$289.0$ $\pm2.8$ $\pm4.0$

57.4k

CLEO

${\it{}E}^{\it{}ee}_{\rm{}cm}$= $10.6$ GeV

• • We do not use the following data for averages, fits, limits, etc. • •

$291.2$ $\pm2.0$ $\pm1.2$

ALEP

Repl. by BARATE 1997R

$291.4$ $\pm3.0$

DLPH

Repl. by ABDALLAH 2004T

$290.1$ $\pm4.0$

34k

L3

Repl. by ACCIARRI 2000B

$297$ $\pm9$ $\pm5$

1671

SLD

1992--1993 SLC runs

$304$ $\pm14$ $\pm7$

4100

CLEO

${\it{}E}^{\it{}ee}_{\rm{}cm}$= $10.6$ GeV

$301$ $\pm29$

3780

JADE

${\it{}E}^{\it{}ee}_{\rm{}cm}$= 35$-$46 GeV

$288$ $\pm16$ $\pm17$

807

MRK2

${\it{}E}^{\it{}ee}_{\rm{}cm}$= 29 GeV

$306$ $\pm20$ $\pm14$

695

TASS

${\it{}E}^{\it{}ee}_{\rm{}cm}$= 36 GeV

$299$ $\pm15$ $\pm10$

1311

HRS

${\it{}E}^{\it{}ee}_{\rm{}cm}$= 29 GeV

$295$ $\pm14$ $\pm11$

5696

ARG

${\it{}E}^{\it{}ee}_{\rm{}cm}$= 9.3$-$10.6 GeV

$309$ $\pm17$ $\pm7$

3788

MAC

${\it{}E}^{\it{}ee}_{\rm{}cm}$= 29 GeV

$325$ $\pm14$ $\pm18$

8470

CLEO

${\it{}E}^{\it{}ee}_{\rm{}cm}$= 10.5 GeV

$460 \pm190$

102

MRK2

${\it{}E}^{\it{}ee}_{\rm{}cm}$= 29 GeV

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