pdgLive

${{\mathit D}^{\pm}}$ MEAN LIFE

INSPIRE JSON (beta) PDGID:

Measurements with an error $>100 \times 10^{-15}~$s have been omitted from the Listings.

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

EVTS

DOCUMENT ID

TECN

COMMENT

$\bf{ 1033 \pm5}$

OUR AVERAGE

$1030.4$ $\pm4.7$ $\pm3.1$

171k

BEL2

${{\mathit e}^{+}}{{\mathit e}^{-}}$ at ${{\mathit \Upsilon}{(4S)}}$

$1039.4$ $\pm4.3$ $\pm7.0$

110k

FOCS

${{\mathit \gamma}}$ nucleus, $\approx{}$180 GeV

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

$1033.6$ $\pm22.1$ ${}^{+9.9}_{-12.7}$

3.7k

CLEO

${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}{{\mathit \Upsilon}{(4S)}}$

$1048$ $\pm15$ $\pm11$

9k

E687

${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$

$1075$ $\pm40$ $\pm18$

2.4k

E687

${{\mathit \gamma}}$ Be, ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$

$1030$ $\pm80$ $\pm60$

200

NA14

${{\mathit \gamma}}$, ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$

$1050$ ${}^{+77}_{-72}$

317

ACCM

${{\mathit \pi}^{-}}{}^{}\mathrm {Cu}$ 230 GeV

$1050$ $\pm80$ $\pm70$

363

ARG

${{\mathit e}^{+}}{{\mathit e}^{-}}$ 10 GeV

$1090$ $\pm30$ $\pm25$

2.9k

E691

Photoproduction

¹	ABUDINEN 2021A determines the lifetime ratio $\tau ({{\mathit D}^{+}})/\tau ({{\mathit D}^{0}}$) = $2.510$ $\pm0.013$ $\pm0.007$.

²	BARLAG 1990C estimates the systematic error to be negligible.

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