We present the first comprehensive measurement of D0,D+,D∗+ and
their charge conjugate states at mid-rapidity in d+Au collisions at
sNN=200 GeV using the STAR TPC. The directly measured open charm
multiplicity distribution covers a broad transverse momentum region of
0<pT<11 GeV/c. The measured dN/dy at mid-rapidity for D0 is
0.0265±0.0036(stat.)±0.0071(syst.) and the measured D∗+/D0
and D+/D0 ratios are approximately equal with a magnitude of 0.40±0.09(stat.)±0.13(syst.). The total ccˉ cross section per
nucleon-nucleon collision extracted from this study is 1.18±0.21(stat.)±0.39(syst.)mb. The direct measurement of open charm production is
consistent with STAR single electron data. This cross section is higher than
expectations from PYTHIA and other pQCD calculations. The measured pT
distribution is harder than the pQCD prediction using the Peterson
fragmentation function.Comment: Quark Matter 2004 Proceeding