Measurement of single electrons and implications for charm production in Au+Au collisions at sqrt(s_NN)= 130 GeV

Details Measurement of single electrons and implications for charm production in Au+Au collisions at sqrt(s_NN)= 130 GeV Measurement of single electrons and implications for charm production in Au+Au collisions at sqrt(s_NN)= 130 GeV

2002-02-05

arxiv.org/abs/nucl-ex/0202002v2

Phys.Rev.Lett.88:192303,2002

Physics

Nuclear Physics

Nuclear Experiment

6 pages, RevTeX 3, 4 figures, 1 table, 308 authors, accepted by Phys. Rev. Lett. on 29 March 2002. v2 has minor changes made i

Scientific paper

10.1103/PhysRevLett.88.192303

Transverse momentum spectra of electrons from Au+Au collisions at sqrt(s_NN) = 130 GeV have been measured by the PHENIX experiment at RHIC. The spectra show an excess above the background from photon conversions and light hadron decays. The electron signal is consistent with that expected from semi-leptonic decays of charm. The yield of the electron signal dN_e/dy for p_T > 0.8 GeV/c is 0.025 +/- 0.004 (stat.) +/- 0.010 (sys.) in central collisions, and the corresponding charm cross section is 380 +/- 60 (stat.) +/- 200 (sys.) micro barns per binary nucleon-nucleon collision.

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