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Transverse momentum spectra up to 4.5 GeV/c around midrapidity of pi^{+/-},p, pbar, K^{+/-} in Pb+Pb reactions were measured at sqrt{s_{NN}}=17.3 GeV bythe CERN-NA49 experiment. The nuclear modification factors R_{AA} for pi^{+/-}and R_{CP} for pi^{+/-},p,pbar,K^{+/-} were extracted and are compared to RHICresults at sqrt{s_{NN}}=200 GeV. The modification factor R_{AA} shows a rapidincrease with transverse momentum in the covered region. This indicates thatthe Cronin effect is the dominating effect in our energy range. Themodification factor R_{CP}, in which the contribution of the Cronin effect isreduced, shows a saturation well below unity in the pi^{+/-} channel. Theextracted R_{CP} values follow the 200 GeV RHIC results closely in theavailable transverse momentum range, except for pi^{+/-} above 2.5 GeV/ctransverse momentum. There the measured suppression is smaller than thatobserved at RHIC.

High Transverse Momentum Hadron Spectra at sqrt{s_{NN}}=17.3 GeV, in Pb+Pb and p+p Collisions