BE-HaPPY: Bias Emulator for Halo Power Spectrum including massive
  neutrinos
  We study the clustering properties of dark matter halos in real- and
redshift-space in cosmologies with massless and massive neutrinos through a
large set of state-of-the-art N-body simulations. We provide quick and
easy-to-use prescriptions for the halo bias on linear and mildly non-linear
scales, both in real and redshift space, which are valid also for massive
neutrinos cosmologies. Finally we present a halo bias
emulator,$\textbf{BE-HaPPY}$, calibrated on the N-body simulations, which is
fast enough to be used in the standard Markov Chain Monte Carlo approach to
cosmological inference. For a fiducial standard $\Lambda$CDM cosmology
$\textbf{BE-HaPPY}$ provides percent or sub-percent accuracy on the scales of
interest (linear and well into the mildly non-linear regime), meeting therefore
for the halo-bias the accuracy requirements for the analysis of next-generation
large--scale structure surveys.
