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Open charm yields in d+Au collisions at sqrt{s_{_(NN)}}=200 GeV
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Open charm yields in d+Au collisions at sqrt{s_{_(NN)}}=200 GeV
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Mid-rapidity open charm spectra from direct reconstruction of $D^{0}$($\bar{D^0}$)$\to K^{\mp}\pi^{\pm}$ in d+Au collisions and indirect electron/positron measurements via charm semileptonic decays in p+p and d+Au collisions at \srt = 200 GeV are reported. The $D^{0}$($\bar{D^0}$) spectrum covers a transverse momentum ($p_T$) range of 0.1 $<p_T<$ 3 \GeVc whereas the electron spectra cover a range of 1 $<p_T<$ 4 GeV/$c$. The electron spectra show approximate binary collision scaling between p+p and d+Au collisions. From these two independent analyses, the differential cross section per nucleon-nucleon binary interaction at mid-rapidity for open charm production from d+Au collisions at RHIC is $d\sigma^{NN}_{c\bar{c}}/dy$=0.30$\pm$0.04 (stat.)$\pm$0.09(syst.) mb. The results are compared to theoretical calculations. Implications for charmoniumm results in A+A collisions are discussed.
Forward citations
Cited by 1 Pith paper
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Open charm production and $\Lambda_{c}^{+}/D^{0}$ ratio in pp and Au+Au collisions at the RHIC
In an AMPT simulation with a hybrid coalescence+fragmentation scheme, the enhanced Lambda_c+/D0 ratio in Au+Au collisions at 200 GeV is reproduced only when coalescence is included, implicating coalescence as the domi...
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