  We report the discovery of a planet --- OGLE-2014-BLG-0676Lb --- via
gravitational microlensing. Observations for the lensing event were made by the
MOA, OGLE, Wise, RoboNET/LCOGT, MiNDSTEp and $\mu$FUN groups. All analyses of
the light curve data favour a lens system comprising a planetary mass orbiting
a host star. The most favoured binary lens model has a mass ratio between the
two lens masses of $(4.78 \pm 0.13)\times 10^{-3}$. Subject to some important
assumptions, a Bayesian probability density analysis suggests the lens system
comprises a $3.09_{-1.12}^{+1.02}$ M_jup planet orbiting a
$0.62_{-0.22}^{+0.20}$ M_sun host star at a deprojected orbital separation of
$4.40_{-1.46}^{+2.16}$ AU. The distance to the lens system is
$2.22_{-0.83}^{+0.96}$ kpc. Planet OGLE-2014-BLG-0676Lb provides additional
data to the growing number of cool planets discovered using gravitational
microlensing against which planetary formation theories may be tested. Most of
the light in the baseline of this event is expected to come from the lens and
thus high-resolution imaging observations could confirm our planetary model
interpretation.
