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Knospe, A. G.
The European physical journal. C, Particles and fields, 07/2009, Letnik: 62, Številka: 1Journal Article
Heavy-flavor semileptonic decays are expected to dominate the spectrum of non-photonic electrons produced from collisions at the energies of the Relativistic Heavy Ion Collider. The non-photonic electron yield is suppressed by approximately a factor of 5 in central Au + Au events at GeV relative to p + p events with the same collision energy. Most theoretical models predict less non-photonic-electron suppression than is observed experimentally. We present a preliminary measurement of the yield of non-photonic electrons in Cu + Cu events at GeV, as well as the nuclear modification factor.
