Strange particle production in p+p collisions at root s=200 GeV

doi:10.1103/PhysRevC.75.064901

	Strange particle production in p+p collisions at root s=200 GeV
	Abelev, B. I.; Adams, J.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D.; Anderson, M.; Arkhipkin, D.; Averichev, G. S.; Bai, Y.
刊名	PHYSICAL REVIEW C
	2007-06-01
卷号	75 页码:21
ISSN号	0556-2813
DOI	10.1103/PhysRevC.75.064901
英文摘要	We present strange particle spectra and yields measured at midrapidity in root s = 200 GeV proton-proton (p + p) collisions at the BNL Relativistic Heavy Ion Collider (RHIC). We find that the previously observed universal transverse mass (m(T) = root PT2 + m(2)) scaling of hadron production in p + p collisions seems to break down at higher m(T) and that there is a difference in the shape of the m(T) spectrum between baryons and mesons. We observe midrapidity antibaryon to baryon ratios near unity for Lambda and Xi baryons and no dependence of the ratio on transverse momentum, indicating that our data do not yet reach the quark-jet dominated region. We show the dependence of the mean transverse momentum < p(T)> on measured charged particle multiplicity and on particle mass and infer that these trends are consistent with gluon-jet dominated particle production. The data are compared with previous measurements made at the CERN Super Proton Synchrotron and Intersecting Storage Rings and in Fermilab experiments and with leading-order and next-to-leading-order string fragmentation model predictions. We infer from these comparisons that the spectral shapes and particle yields from p + p collisions at RHIC energies have large contributions from gluon jets rather than from quark jets.
WOS关键词	HEAVY-ION COLLISIONS ; THERMAL HADRON-PRODUCTION ; LARGE TRANSVERSE-MOMENTUM ; PROTON-PROTON COLLISIONS ; GEV CM ENERGY ; STATISTICAL THERMODYNAMICS ; FRAGMENTATION FUNCTIONS ; NUCLEAR COLLISIONS ; P(P)OVER-BAR COLLISIONS ; AU+AU COLLISIONS
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000247625200047
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/27783]
专题	中国科学院近代物理研究所
通讯作者	Abelev, B. I.
作者单位	1.Argonne Natl Lab, Argonne, IL 60439 USA 2.Univ Birmingham, Birmingham, W Midlands, England 3.Brookhaven Natl Lab, Upton, NY 11973 USA 4.CALTECH, Pasadena, CA 91125 USA 5.Univ Calif Berkeley, Berkeley, CA 94720 USA 6.Univ Calif Davis, Davis, CA 95616 USA 7.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 8.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 9.Univ Illinois, Chicago, IL USA 10.Creighton Univ, Omaha, NE 68178 USA
推荐引用方式 GB/T 7714	Abelev, B. I.,Adams, J.,Aggarwal, M. M.,et al. Strange particle production in p+p collisions at root s=200 GeV[J]. PHYSICAL REVIEW C,2007,75:21.
APA	Abelev, B. I..,Adams, J..,Aggarwal, M. M..,Ahammed, Z..,Amonett, J..,...&Zuo, J. X..(2007).Strange particle production in p+p collisions at root s=200 GeV.PHYSICAL REVIEW C,75,21.
MLA	Abelev, B. I.,et al."Strange particle production in p+p collisions at root s=200 GeV".PHYSICAL REVIEW C 75(2007):21.