In the low-scale constraint the rho parameter is hard-coded to be 1 at tree-level. This is incorrect for example in the MRSSM and models with extra U(1) gauge groups.
The hard-coding is done in @ModelName@_low_scale_constraint<Two_scale>::calculate_DRbar_gauge_couplings() by setting
cW2 = MW2/MZ2new_g1 = e_drbar * g1_inv_gut_normalization / cosThetaW_drbarnew_g2 = e_drbar * g2_inv_gut_normalization / sinThetaW_drbar
To resolve the issue the tree-level expressions for the W and Z masses and electric charge have to be solved for the gauge couplings g1 and g2.
In the low-scale constraint the rho parameter is hard-coded to be 1 at tree-level. This is incorrect for example in the MRSSM and models with extra U(1) gauge groups.
The hard-coding is done in
@ModelName@_low_scale_constraint<Two_scale>::calculate_DRbar_gauge_couplings()by settingcW2 = MW2/MZ2new_g1 = e_drbar * g1_inv_gut_normalization / cosThetaW_drbarnew_g2 = e_drbar * g2_inv_gut_normalization / sinThetaW_drbarTo resolve the issue the tree-level expressions for the W and Z masses and electric charge have to be solved for the gauge couplings g1 and g2.