snorer.dsigma_xv¶

snorer.dsigma_xv(Ev,mx,psi,sigxv0=1e-45)¶

Differential DM-$\nu$ scattering cross section at angle $\psi$ in lab frame, $$ \frac{d\sigma_{\chi\nu}}{d\Omega_{\rm lab}}=\sigma_0 \times g_\chi(\psi). $$ See Eqs. (2) and (3) in BDM Physics.

Parameters:

Ev : array_like
    Neutrino energy, MeV.

mx : array_like
    Dark matter mass, MeV.

psi : array_like
    Lab frame scattering angle $\psi \in [0,\pi/2]$.

sigxv0 : array_like
    Energy-independent DM-$\nu$ cross section $\sigma_0$, cm². Default is $10^{-45}$ cm².

Returns:

out : scalar/ndarray
Differential DM-$\nu$ cross section, cm² sr⁻¹. Out is scalar if all inputs are scalars.

Notes

The result is simply sigxv0 * snorer.get_gx. See also snorer.get_gx.