# What's the particle associated with the interaction between the Higgs field and elementary particle fields?

With every interaction between elementary particles, there is a particle associated with the transmission of the force at hand (example: the photon transmitting the e.m force).

What's the particle conveying the interaction between the Higgs field and elementary particles fields?

There is no such mediating particle or field. The interaction between the Higgs field and the fermion fields is a Yukawa interaction where a fermion bilinear directly couples to the scalar field as a term $\bar\psi\psi h$ in the Lagrangian.
In fact, you might view the Higgs itself as the mediating particle for an associated Yukawa force with potential $V(r) \propto \mathrm{e}^{-\mu r} / r$, where $\mu$ is the mass of the scalar, but since the Higgs is rather massive this "force" is so short-ranged as to be non-existent at the classical scales where it would make sense to speak of a force. The significance of this interaction in the standard model is mainly that it gives rise to the mass term of the fermions when the Higgs field acquires its VEV/mass.
• @descheleschilder A Feynman diagram is not a representation of what happens in a scattering process, but it basically represents an equation. Don't take them too literally. What we know is $m$ things goes in and $n$ things comes out and those diagrams are closely related to the probability of that happening. – FrodCube Dec 28 '16 at 14:35