  We present the first case in which the BEER algorithm identified a hot
Jupiter in the Kepler light curve, and its reality was confirmed by orbital
solutions based on follow-up spectroscopy. The companion Kepler-76b was
identified by the BEER algorithm, which detected the BEaming (sometimes called
Doppler boosting) effect together with the Ellipsoidal and Reflection/emission
modulations (BEER), at an orbital period of 1.54 days, suggesting a planetary
companion orbiting the 13.3 mag F star. Further investigation revealed that
this star appeared in the Kepler eclipsing binary catalog with estimated
primary and secondary eclipse depths of 5e-3 and 1e-4 respectively.
Spectroscopic radial-velocity follow-up observations with TRES and SOPHIE
confirmed Kepler-76b as a transiting 2.0+/-0.26 Mjup hot Jupiter. The mass of a
transiting planet can be estimated from either the beaming or the ellipsoidal
amplitude. The ellipsoidal-based mass estimate of Kepler-76b is consistent with
the spectroscopically measured mass while the beaming-based estimate is
significantly inflated. We explain this apparent discrepancy as evidence for
the superrotation phenomenon, which involves eastward displacement of the
hottest atmospheric spot of a tidally-locked planet by an equatorial
super-rotating jet stream. This phenomenon was previously observed only for HD
189733b in the infrared. We show that a phase shift of 10.3+/-2.0 degrees of
the planet reflection/emission modulation, due to superrotation, explains the
apparently inflated beaming modulation, resolving the ellipsoidal/beaming
amplitude discrepancy. Kepler-76b is one of very few confirmed planets in the
Kepler light curves that show BEER modulations and the first to show
superrotation evidence in the Kepler band. Its discovery illustrates for the
first time the ability of the BEER algorithm to detect short-period planets and
brown dwarfs.
