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Light neutral meson differential invariant cross section and nuclearmodification factor measurements have been carried out with the ALICE detectorat the CERN LHC in pp collisions at $\sqrt{s}=8$ TeV and p--Pb collisions at$\sqrt{s_\mathrm{NN}}=8.16$ TeV. The analysis combines results from severalpartially independent reconstruction techniques where the $\pi^0$ and $\eta$meson decay photons were detected with the electromagnetic calorimeter, EMCal,the photon spectrometer, PHOS, or via reconstruction of $e^+e^-$ pairs fromconversions in the ALICE detector material using the central tracking system.The neutral pion measurement reaching a $p_\mathrm{T}$ of 200 GeV/$c$ poses asthe highest measured identified particle spectrum to date while the $\eta$meson is measured to an unprecedented $p_\mathrm{T}$ of 50 GeV/$c$. The spectraare found to be generally overestimated by NLO pQCD calculations. The nuclearmodification factors of both mesons exhibit a suppression for $p_\mathrm{T}<10$GeV/$c$ which is stronger compared to previous measurements at$\sqrt{s_\mathrm{NN}}=5.02$ TeV and consistent with CGC and cold nuclear matterenergy loss calculations. For $p_\mathrm{T}>10$ GeV/$c$, $R_\mathrm{pPb}$ isconsistent with unity and theory predictions.

Light meson nuclear modification factor in p-Pb collisions over an unprecedented $p_\mathrm{T}$ range with ALICE