Regular Article – Experimental Physics
Measurement of single muon yields from charm semileptonic decay at =200 GeV Au + Au collisions at STAR
Shanghai Institute of Applied Physics, CAS, Shanghai, 201800, P.R. China
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Published online: 28 November 2006
We report on the first measurement of single muon from charm semileptonic decays at low transverse momentum (pT) in =200 GeV Au+Au collisions. Muon identification was obtained using the STAR time projection chamber in conjunction with a time-of-flight detector. The pT spectra of electron and muon from charm semileptonic decays are presented. The measured D→μ+X at pT<0.25 GeV/c greatly constrains the charm total cross section. The charm differential cross section dσcc/dy is found to be consistent with the number of binary collision scaling.
© Springer-Verlag Berlin Heidelberg, 2007