Suppression of high-pT neutral pion production in central Pb+Pb collisions at √sNN = 17.3 GeV relative to p+C and p+Pb collisions
Publication date
2008
Authors
Aggarwal, M.M.
Geurts, F.J.M.
Kamermans, Rene
Peitzmann, T.
van der Pijll, E.C.
van Eijndhoven, N.J.A.M.
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Abstract
Neutral pion transverse momentum spectra were measured in p+C and p+Pb collisions at =17.4 GeV at midrapidity (2.3lab3.0) over the range 0.7pT3.5 GeV/c. The spectra are compared to 0 spectra measured in Pb+Pb collisions at =17.3 GeV in the same experiment. For a wide range of Pb+Pb centralities (Npart300), the yield of 0's with pT2 GeV/c is larger than or consistent with the p+C or p+Pb yields scaled with the number of nucleon-nucleon collisions (Ncoll), while for central Pb+Pb collisions with Npart350, the 0 yield is suppressed.
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Aggarwal, M M, Geurts, F J M, Kamermans, R, Peitzmann, T, van der Pijll, E C & van Eijndhoven, N J A M 2008, 'Suppression of high-pT neutral pion production in central Pb+Pb collisions at √sNN = 17.3 GeV relative to p+C and p+Pb collisions', Physical Review Letters, vol. 100, no. 24, 242301, pp. 1-5. https://doi.org/10.1103/PhysRevLett.100.242301