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arXiv · 0901.0740

Measurement of D* Mesons in Jets from p+p Collisions at sqrt{s} = 200 GeV

The STAR Collaboration·B. I. Abelev
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Abstract

We report the measurement of charged $D^*$ mesons in inclusive jets produced in proton-proton collisions at a center of mass energy $\sqrt{s}$ = 200 GeV with the STAR experiment at RHIC. For $D^{*}$ mesons with fractional momenta $0.2 < z < 0.5$ in inclusive jets with 11.5 GeV mean transverse energy, the production rate is found to be $N(D^{*+}+D^{*-})/N(\mathrm{jet}) = 0.015 \pm 0.008 (\mathrm{stat}) \pm 0.007 (\mathrm{sys})$. This rate is consistent with perturbative QCD evaluation of gluon splitting into a pair of charm quarks and subsequent hadronization.

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The STAR Collaboration, B. I. Abelev. 2009-01-07. Measurement of D* Mesons in Jets from p+p Collisions at sqrt{s} = 200 GeV. https://doi.org/10.1103/physrevd.79.112006

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