dmscatter: A fast program for WIMP-nucleus scattering

Recent work [1], [2], using an effective field theory framework, have shown the number of possible couplings between nucleons and dark-matter-candidate Weakly Interacting Massive Particles (WIMPs) is larger than previously thought. Inspired by existing Mathematica script that computes target response we developed a fast, modern Fortran code, including optional OpenMP parallelization, along with user-friendly Python wrapper, to swiftly efficiently explore many scenarios, output aligned practices current dark matter searches. A library most important nuclides included; users may also import their own nuclear structure data, in form reduced one-body density matrices. The main differential event rate as function recoil energy, needed for modeling detector rates, but intermediate results such factors can be readily accessed. Program Title: dmscatter CPC Library link program files: https://doi.org/10.17632/6fm7d4m2py.1 Developer's repository link: https://github.com/ogorton/dmscatter Licensing provisions: MIT Programming languages: Fortran, Nature problem: Simulating recoils from collisions variety different targets nucleon-dark couplings. Solution method: integral over product functions, weighted expected flux. To compute response, matrices are coupled multipole expansion operators computed analytically harmonic oscillator basis. input, densities matrices, supplied outside code; provide prominent targets.