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|a Balewski, Jan T.
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|a Massachusetts Institute of Technology. Department of Physics
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|a Massachusetts Institute of Technology. Laboratory for Nuclear Science
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|a Balewski, Jan T.
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|a Betancourt, Michael Joseph
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|a Seele, Joseph Patrick
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|a Steadman, Stephen G.
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|a Surrow, Bernd
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|a Nieuwenhuizen, Gerrit van
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|a Betancourt, Michael Joseph
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|a Leight, William Axel
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|a Redwine, Robert P.
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|a Seele, Joseph Patrick
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|a Steadman, Stephen G.
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|a Surrow, Bernd
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|a Nieuwenhuizen, Gerrit van
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|a Measurements of D[superscript 0] and D[superscript *] production in p+p collisions at √s=200 GeV
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|b American Physical Society,
|c 2013-01-08T17:30:58Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/76200
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|a We report measurements of charmed-hadron (D[superscript 0],D[superscript *]) production cross sections at midrapidity in p+p collisions at a center-of-mass energy of 200 GeV by the STAR experiment. Charmed hadrons were reconstructed via the hadronic decays D[superscript 0]→K[superscript -]π[superscript +], D[superscript *+]→D[superscript 0]π+→K[superscript -]π[superscript +]π[superscript +] and their charge conjugates, covering the p[subscript T] range of 0.6-2.0 and 2.0-6.0 GeV/c for D[superscript 0] and D[superscript *+], respectively. From this analysis, the charm-pair production cross section at midrapidity is dσ/dy|[subscript y=0[superscript cc̅]] =170±45(stat)[subscript -59][superscript +38](sys) μb. The extracted charm-pair cross section is compared to perturbative QCD calculations. The transverse momentum differential cross section is found to be consistent with the upper bound of a fixed-order next-to-leading logarithm calculation.
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|a Article
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|t Physical Review D
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