Measurements of D0 and D* production in p+p collisions at √s=200  GeV

Adamczyk, L. and Planinić, Mirko and Poljak, Nikola and Zoulkarneeva, Y. (STAR Collaboration) (2012) Measurements of D0 and D* production in p+p collisions at √s=200  GeV. Physical Review D, 86 (7). pp. 72013-14. ISSN 1550-7998

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We report measurements of charmed-hadron (D0, D*) 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 D0→K-π+, D*+→D0π+→K- π+π+ and their charge conjugates, covering the pT range of 0.6– 2.0 and 2.0–6.0  GeV/c for D0 and D*+, respectively. From this analysis, the charm-pair production cross section at midrapidity is dσ/dy|y=0cc̅ =170±45(stat)-59+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.

Item Type: Article
Keywords: D production, collision, STAR
Date: October 2012
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2012) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982887-1006
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 05 Jun 2014 10:15
Last Modified: 23 Feb 2016 15:52

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