The ALICE Collaboration , Acharya , S , Brücken , E J , Chang , B , Hilden , T E , Kim , D J , Litichevskyi , V , Mieskolainen , M M , Orava , R , Parkkila , J E , Rak , J , Räsänen , S S , Saarinen , S , Slupecki , M , Snellman , T W , Trzaska , W H , Vargyas , M & Viinikainen , J 2019 , ' Multiplicity dependence of light-flavor hadron production in pp collisions at root s=7 TeV ' , Physical Review C , vol. 99 , no. 2 , 024906 . https://doi.org/10.1103/PhysRevC.99.024906

Neutral pion and η meson invariant differential yields were measured in non-single diffractive p–Pb collisions at √ s NN = 5.02 TeV with the ALICE experiment at the CERN LHC. The analysis combines results from three complementary photon measurements, utilizing the PHOS and EMCal calorimeters and the Photon Conversion Method. The invariant differential yields of π 0 and η meson inclusive production are measured near mid-rapidity in a broad transverse momentum range of 0 . 3 < p T < 20 GeV / c and 0 . 7 < p T < 20 GeV / c , respectively. The measured η/π 0 ratio increases with p T and saturates for p T > 4 GeV / c at 0 . 483 ± 0 . 015 stat ± 0 . 015 sys . A deviation from m T scaling is observed for p T < 2 GeV / c . The measured η/π 0 ratio is consistent with previous measurements from proton-nucleus and pp collisions over the full p T range. The measured η/π 0 ratioathigh p T alsoagreeswithinuncertaintieswithmeasure-ments from nucleus–nucleus collisions. The π 0 and η yields in p–Pb relative to the scaled pp interpolated reference, R pPb , are presented for 0 . 3 < p T < 20 GeV / c and 0 . 7 < p T < 20 GeV / c , respectively. The results are compared with theoretical model calculations. Thevalues of R pPb areconsistent with unity for transverse momenta above 2 GeV / c . These results support the interpretation