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

Scientific paper - Original scientific paper

• Author: L. Adamczyk
• Author: ...
• Author: Mirko Planinić
• Author: ...
• Author: Nikola Poljak
• Author: ...
• Author: Y. Zoulkarneeva
• Collaboration: STAR Collaboration
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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.

• Keywords (english): D production; collision; STAR
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review D - Particles, Fields, Gravitation and Cosmology
• Numbering: vol. 86, no. 7, 072013
• p-ISSN: 1550-7998
• e-ISSN: 1550-2368
• DOI: https://doi.org/10.1103/PhysRevD.86.072013
• URN:NBN: urn:nbn:hr:217:193485
• Publication: 2012
• Project: Number: 119-0982887-1006; Title (croatian): Istraživanje hadronskih sustava upotrebom relativističkih projektila; Leader: Mirko Planinić; Jurisdiction: Croatia; Funding stream: ZP
• Document URL: http://link.aps.org/doi/10.1103/PhysRevD.86.072013
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (2012) by the American Physical Society. Received 19 April 2012; revised manuscript received 15 October 2012; published 31 October 2012.
• Created on: 2019-11-20 12:30:54