WimPyDD: an object-oriented Python code for WIMP-nucleus scattering direct detection in virtually any scenario

Abstract We introduce WimPyDD, a modular, object-oriented and customisable Python code that accurately predicts the expected WIMP-nucleus scattering rates in WIMP direct-detection experiments including response of detector. WimPyDD utilises framework Galilean-invariant non-relativistic effective theory, allowing to handle an arbitrary number operators, can perform calculation excepted rate virtually any scenario, inelastic scattering, WIMPs with spin, generic velocity distribution Galactic halo. The power flexibility is discussed some explicit examples.