Dear Florian,

In the leptoquark model, this field can be a vector boson, which does not come from a new gauge. How can we implement this new field and the corresponding interactions in SARAH?

Best regards,
Keping

Dear Keping,

at the moment being a massive spin one particle can only implemented if it results from a spontaneous symmetry breaking. I have been thinking to extend SARAH in the direction you mention because on the long run I am also interested in composite Higgs models but this requires a substantial change of the underlying code.
I am sorry that this simple answer took so long but for some reason the automatic email which I should have gotten due to your entry in the forum did not arrive.

Best regards,
Werner