Abstract
Transverse momentum spectra of π± at midrapidity are measured at high pT in p + p and p + Pb collisions at 158 GeV/nucleon beam energy by the NA49 experiment. This study is complementary to our previous results on the same spectra from Pb + Pb collisions. The nuclear modification factors RA+A/p+p, Rp+A/p+p and RA+A/p+A as a function of pT are extracted and compared to RHIC measurements, thus providing insight into the energy dependence of nuclear modification. The modification factor RA+A/p+A proved to be consistent with our previous results on the central to peripheral modification factor RCP. The limitation of our current pT range is discussed and planned future upgrades are outlined. Some aspects of the FAIR-CBM experiment are also presented as a natural future continuation of the measurements at very high pT.
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