There are many models incorporating neutrino masses. However, they do not only incorporate neutrino masses, but also many other things that have not been discovered (yet?). Therefore, for the moment, we do not know how to exactly extent the Standard Model to add the neutrino masses. We know they must be there, but we do not know how (yet? :p ).
Read it, wouldn't this mean that a revision of the standard model should still take place? :) thanks for the information
There are many models incorporating neutrino masses. However, they do not only incorporate neutrino masses, but also many other things that have not been discovered (yet?). Therefore, for the moment, we do not know how to exactly extent the Standard Model to add the neutrino masses. We know they must be there, but we do not know how (yet? :p ).
Thank you for clarifying :D
My pleasure! :)