Standard Model with right-handed neutrinos

[GeV]

Hey, I would like to ask you: I need have Standard Model with right-handed neutrinos. This is the simplest extension of SM which contains the Dirac and Majorana neutrinos.
PR (right projection operator) coefficients should be nonzero. Is that enough? But what is their value? In the SM for the neutrinos interaction with the Z boson, the coefficients are respectively 1 / 2 and 0.
Do neutrinos further in this model are massless? What is the Lagrangian interaction with W and Z? Is there any name of this model? Are any papers about this model?

thanks for your reply:)
GeV

 

[AndyW]

Hello,

Thank you for your question. The inclusion of right-handed neutrinos in the Standard Model is indeed the simplest extension to the model. The coefficients for the right projection operator (PR) are not specified in the Standard Model and can vary depending on the specific model being studied. Therefore, it is not enough to just include the PR coefficients, as their values must be determined through experimentation or theoretical calculations.

In terms of mass, the inclusion of right-handed neutrinos does not necessarily mean that all neutrinos in the model will be massless. The mass of neutrinos is still an open question in particle physics and is an active area of research. The specific model you are referring to may have a mechanism for generating neutrino masses, but without more information, it is difficult to say for sure.

The Lagrangian interaction with the W and Z bosons in this model will also depend on the specific implementation of the right-handed neutrinos. Again, without more information, it is difficult to give a definitive answer. However, in general, the interaction between the neutrinos and the W and Z bosons in the Standard Model is described by the weak interaction Lagrangian.

There are many different models that include right-handed neutrinos, so there is not one specific name for this model. It is important to note that the inclusion of right-handed neutrinos is not a new idea and has been studied extensively in the past. There are many papers and studies on this topic, so I would recommend doing some research and reading up on the various models and their predictions.

I hope this helps answer your questions. Best of luck with your research!