  We present a measurement of the W boson mass using data corresponding to
4.3fb^-1 of integrated luminosity collected with the D0 detector during Run II
at the Fermilab Tevatron p\bar{p} collider. With a sample of 1,677,394 W ->
e\nu candidate events, we measure M_W = 80.367 +/- 0.026 GeV. This result is
combined with an earlier D0 result determined using an independent Run II data
sample, corresponding to 1fb^-1 of integrated luminosity, to yield M_W = 80.375
+/- 0.023 GeV.

High Energy Physics - Experiment