Measurements of D-0 and D* production in p plus p collisions at root s=200 GeV

doi:10.1103/PhysRevD.86.072013

	*Measurements of D-0 and D production in p plus p collisions at root s=200 GeV**
	Adamczyk, L.1; Agakishiev, G.19; Aggarwal, M. M.30; Ahammed, Z.49; Alakhverdyants, A. V.19; Alekseev, I.17; Alford, J.20; Anderson, B. D.20; Anson, C. D.28; Arkhipkin, D.3
刊名	PHYSICAL REVIEW D
	2012-10-31
卷号	86
ISSN号	1550-7998
DOI	10.1103/PhysRevD.86.072013
文献子类	Article
英文摘要	We report measurements of charmed-hadron (D-0, 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 D-0 -> K- pi(+), D(+) -> D-0 pi(+) -> K-pi(+)pi(+) and their charge conjugates, covering the p(T) range of 0.6-2.0 and 2.0-6.0 GeV/c for D-0 and D*(+), respectively. From this analysis, the charm-pair production cross section at midrapidity is d sigma/dy vertical bar(c (c) over bar)(y-0) = 170+/-45(stat)(-59)(+38()sys) mu b. 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.
WOS关键词	ELECTROMAGNETIC CALORIMETER ; STAR ; HADRONIZATION ; CHARM
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000310436300002
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/48987]
专题	中国科学院近代物理研究所
通讯作者	Adamczyk, L.
作者单位	1.AGH Univ Sci & Technol, Krakow, Poland 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Brookhaven Natl Lab, Upton, NY 11973 USA 4.Univ Calif Berkeley, Berkeley, CA 94720 USA 5.Univ Calif Davis, Davis, CA 95616 USA 6.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 7.Univ Estadual Campinas, Sao Paulo, Brazil 8.Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China 9.Univ Illinois, Chicago, IL 60607 USA 10.Creighton Univ, Omaha, NE 68178 USA
推荐引用方式 GB/T 7714	Adamczyk, L.,Agakishiev, G.,Aggarwal, M. M.,et al. Measurements of D-0 and D* production in p plus p collisions at root s=200 GeV[J]. PHYSICAL REVIEW D,2012,86.
APA	Adamczyk, L..,Agakishiev, G..,Aggarwal, M. M..,Ahammed, Z..,Alakhverdyants, A. V..,...&Collaboration, Star.(2012).Measurements of D-0 and D* production in p plus p collisions at root s=200 GeV.PHYSICAL REVIEW D,86.
MLA	Adamczyk, L.,et al."Measurements of D-0 and D* production in p plus p collisions at root s=200 GeV".PHYSICAL REVIEW D 86(2012).