The files "MgHH_Potential_Singlet" and "MgHH_Potential_Triplet" respectively hold results of ab initio calculation of the potential energy surfaces (PESs), V(R,θ) in units of cm^-1, for the singlet (1A') and triplet (3A') states of the MgH-H system. Here R represents the distance (in atomic units) from the center of mass of MgH molecule to the H atom, and θ is the rotation angle (in degrees) of the H atom around the MgH. All the PESs are obtained using the MOLPRO package (e.g. Werner et al. 2010). The files "MgHH_Sigma_0toL_Singlet.csv" and "MgHH_Sigma_0toL_Triplet.csv" respectively contain results of the infinite-order sudden (IOS) approximation calculation of cross sections, σ(0->L) in units of Angstrom^2, as functions of energy in units of cm^-1 for the 1A' and 3A' states of the MgH-H system. The IOS cross sections are calculated using MOLSCAT code (Hutson & Green 1994). The depolarization and transfer of polarization cross sections can be calculated from the IOS cross sections via Eqs. (1) & (2) of Qutub et al. 2020.

{"references": ["Werner H.-J., Knowles P. J., Knizia G., Manby F. R., Sch\\\"{u}tz M. et al., MOLPRO, version 2010.1, a package of ab initio programs, 2010, see http://www.molpro.net.", "Hutson J.M. \\& Green S., MOLSCAT computer code, version 14 (1994) distributed by Collaborative Computational Project No. 6 of the Engineering and Physical Sciences Research Council (UK).", "Qutub S., Derouich M., Kalugina Y.N., Asiri H. \\& Lique F., 2020, MNRAS, 491, 1213 (DOI: 10.1093/mnras/stz3020)."]}

This research work was funded by the Institutional Fund Projects under grant No. (IFPHI-179-130-2020). Therefore, authors gratefully acknowledge technical and financial support from the Ministry of Education and King Abdulaziz University, DSR, Jeddah, Saudi Arabia.