  We investigate the effect of electron-electron interactions in ABC stacked
graphene trilayers. In the gapless regime, we show that the self-energy
corrections lead to the renormalization of the dynamical exponent
$z=3+\alpha_{1}/N$, with $\alpha_{1}\approx0.52$ and $N$ is the number of
fermionic species. Although the quasiparticle residue is suppressed near the
neutrality point, the lifetime has a sublinear scaling with the energy and the
quasiparticles are well defined even at zero energy. We calculate the
renormalization of different physical observables, which can be directly
measured in experiments.
