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High pt charged-pion production in Pb-Au collisions at 158AGeV/c

CERES collaboration
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Abstract

The CERES/Na45 experiment at CERN SPS measured transverse momentum spectra of charged-pions in the range 1<pt<4GeV/c near mid-rapidity in 158 AGeV/c Pb-Au collisions. The invariant transverse momentum spectra are exponential over the entire observed range. The average inverse slope is 245+/- 5MeV/c, it shows a 2.4% increase with centrality of the collision over the 35% most central fraction of the cross section. The pi-/pi+ ratio is constant at 1.028+/-0.005 over the pt interval measured.

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CERES collaboration. 2000-03-09. High pt charged-pion production in Pb-Au collisions at 158AGeV/c. https://arxiv.org/abs/hep-ex/0003012

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