This folder contains a number of data files (cross sections, density profiles, etc.) which are loaded and used by the EarthShadow code. Further documentation will be added later on the precise contents of these files and how to make use of them outside of the code.

The folder dcross_sections contains differential cross-sections for dark matter-nucleus scattering tabulated in the files dsigmadE_op_iso.dat, where op= 1, 3, ..., 15 is one of the dark matter-nucleon effective operators we consider, and iso labels 9 isotopes in the Earth:

Each file has 4 columns:

The values cs1 and cs2 are such that for a given operator, isotope, dark matter mass, and recoil energy, the corresponding value of the differential dark matter-nucleus scattering cross-section is

dsigma/dEr = (1/v^2) (cs1+v_T^{\perp 2} cs2)

where the dark matter-nucleus relative velocity v is expressed in natural units, v_T^{\perp 2}=v^2-q^2/(4 mu^2) and mu is the dark matter-nucleus reduced mass.

In calculating the cross sections, the isovector coupling constants have been set to 0, and the isoscalar coupling constants to 2/mV^2, where mV=246.2 GeV is the electroweak scale. This corresponds to assuming the value 1/mV^2 for the coupling constants for protons and neutrons. Rescaling for other values of the coupling constants should then be straightforward.

The folder totcross_sections contains total cross-sections for dark matter-nucleus scattering tabulated in the files sigma_op_iso.dat, where op labels the effective operator and iso labels the isotopes in the Earth (see above).

Each file has 3 columns:

As in the case of the differential cross-sections, the isovector coupling constants have been set to 0, and the isoscalar coupling constants to 2/mV^2, where mV=246.2 GeV is the electroweak scale. This corresponds to assuming the value 1/mV^2 for the coupling constants for protons and neutrons. Rescaling for other values of the coupling constants should then be straightforward.