A Detection of the Baryon Acoustic Oscillation Features in the SDSS BOSS
  DR12 Galaxy Bispectrum
  We present the first high significance detection ($4.1\sigma$) of the Baryon
Acoustic Oscillations (BAO) feature in the galaxy bispectrum of the twelfth
data release (DR12) of the Baryon Oscillation Spectroscopic Survey (BOSS) CMASS
sample ($0.43 \leq z \leq 0.7$). We measured the scale dilation parameter,
$\alpha$, using the power spectrum, bispectrum, and both simultaneously for
DR12, plus 2048 MultiDark-PATCHY mocks in the North and South Galactic Caps
(NGC and SGC, respectively), and the volume weighted averages of those two
samples (N+SGC). The fitting to the mocks validated our analysis pipeline,
yielding values consistent with the mock cosmology. By fitting to the power
spectrum and bispectrum separately, we tested the robustness of our results,
finding consistent values from the NGC, SGC and N+SGC in all cases. We found
$D_{\mathrm{V}} = 2032 \pm 24 (\mathrm{stat.}) \pm 15 (\mathrm{sys.})$ Mpc,
$D_{\mathrm{V}} = 2038 \pm 55 (\mathrm{stat.}) \pm 15 (\mathrm{sys.})$ Mpc, and
$D_{\mathrm{V}} = 2031 \pm 22 (\mathrm{stat.}) \pm 10 (\mathrm{sys.})$ Mpc from
the N+SGC power spectrum, bispectrum and simultaneous fitting, respectively.
