https://doi.org/10.1140/epjc/s10052-009-0981-7
Regular Article - Experimental Physics
Analysis of non-photonic electrons in Cu + Cu collisions at
GeV
Physics Department, Yale University, New Haven, CT, 06520, USA
* e-mail: anders.knospe@yale.edu
Received:
30
September
2008
Revised:
6
February
2009
Published online:
8
April
2009
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.
PACS: 13.20.Fc – / 13.20.He – / 25.75.Cj –
© Springer-Verlag , 2009
