标题： 在sqrt(sNN) = 17.3 GeV的Pb+Pb碰撞中，高pT介子是否被抑制？ 显示英文标题

标题： Are High-pT Pions Suppressed in Pb+Pb Collisions at sqrt(sNN) = 17.3 GeV?

摘要： 中性π介子在0.7 < pT < 3.2 GeV/c范围内的横向动量谱由WA98实验在sqrt(sNN) = 17.3 GeV的p+C和p+Pb碰撞中，在2.3 < eta < 3.0范围内测量得到。通过核子-核子碰撞次数（Ncoll）进行归一化后，p+C和p+Pb在pT ~ 2.0 - 2.5 GeV/c处的π^0产率高于Npart > 300的中央Pb+Pb碰撞中的相应产率。这一观察结果在定性上与部分子能量损失的预期一致。 显示英文摘要

摘要： Transverse momentum spectra of neutral pions in the range 0.7 < pT < 3.2 GeV/c have been measured at 2.3 < eta < 3.0 by the WA98 experiment in p+C and p+Pb collisions at sqrt(sNN) = 17.3 GeV. Scaled by the number of nucleon-nucleon collisions (Ncoll) the pi^0 yields in p+C and p+Pb at pT ~ 2.0 - 2.5 GeV/c are higher than the respective yields in central Pb+Pb collisions with Npart > 300. This observation is qualitatively consistent with expectations from parton energy loss.