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## Homework Statement

We are given the Lagrangian density:

$$ \mathcal{L}=\partial^\mu \phi ^* \partial_\mu \phi - m\phi^* \phi +\sum_{\alpha =1} ^2 (

\overline{\psi}^\alpha (i\gamma^\mu \partial_\mu -m)\psi^\alpha -g\overline{\psi}^\alpha\psi^\alpha \phi^* \phi) $$

, where ##\phi## is a complex scalar field, ##\psi ^1 ## ##\psi ^2 ## are Dirac fields and m,g are constants.

We are asked to find the mass and the spin of the particles that this theory describes.

## Homework Equations

## The Attempt at a Solution

I thouht about using spontaneous symmetry breaking and the Higgs mechanism, but I don't know how to deal with the kind of coupling presented in this problem.