Rapidity and species dependence of particle production at large transverse momentum for d+Au collisions at root S-NN=200 GeV

doi:10.1103/PhysRevC.76.054903

	Rapidity and species dependence of particle production at large transverse momentum for d+Au collisions at root S-NN=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
	2007-11-01
卷号	76 页码:13
ISSN号	0556-2813
DOI	10.1103/PhysRevC.76.054903
英文摘要	We determine rapidity asymmetry in the production of charged pions, protons, and antiprotons for large transverse momentum (p(T)) for d+Au collisions at root s(NN)=200 GeV. The rapidity asymmetry is defined as the ratio of particle yields at backward rapidity (Au beam direction) to those at forward rapidity (d beam direction). The identified hadrons are measured in the rapidity regions \|y\|< 0.5 and 0.5 <\|y\|< 1.0 for the p(T) range 2.5 < p(T)< 10 GeV/c. We observe significant rapidity asymmetry for charged pion and proton+antiproton production in both the rapidity regions. The asymmetry is larger for 0.5 <\|y\|< 1.0 than for \|y\|< 0.5 and is almost independent of particle type. The measurements are compared to various model predictions employing multiple scattering, energy loss, nuclear shadowing, saturation effects, and recombination and also to a phenomenological parton model. We find that asymmetries are sensitive to model parameters and show model preference. The rapidity dependence of pi(-)/pi(+) and (p) over bar /p ratios in peripheral d+Au and forward neutron-tagged events are used to study the contributions of valence quarks and gluons to particle production at high p(T).
WOS关键词	COLOR GLASS CONDENSATE ; ZERO-DEGREE CALORIMETERS ; TIME PROJECTION CHAMBER ; FRAGMENTATION FUNCTIONS ; NUCLEUS COLLISIONS ; PARTON DISTRIBUTIONS ; PROTON ; STAR ; ENERGY ; QUARK
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000251327000051
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/27791]
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.Yale Univ, New Haven, CT 06520 USA 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Univ Birmingham, Birmingham, W Midlands, England 4.Brookhaven Natl Lab, Upton, NY 11973 USA 5.CALTECH, Pasadena, CA 91125 USA 6.Univ Calif Berkeley, Berkeley, CA 94720 USA 7.Univ Calif Davis, Davis, CA 95616 USA 8.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 9.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 10.Univ Chicago, Chicago, IL 60637 USA
推荐引用方式 GB/T 7714	Abelev, B. I.,Adams, J.,Aggarwal, M. M.,et al. Rapidity and species dependence of particle production at large transverse momentum for d+Au collisions at root S-NN=200 GeV[J]. PHYSICAL REVIEW C,2007,76:13.
APA	Abelev, B. I..,Adams, J..,Aggarwal, M. M..,Ahammed, Z..,Amonett, J..,...&Zuo, J. X..(2007).Rapidity and species dependence of particle production at large transverse momentum for d+Au collisions at root S-NN=200 GeV.PHYSICAL REVIEW C,76,13.
MLA	Abelev, B. I.,et al."Rapidity and species dependence of particle production at large transverse momentum for d+Au collisions at root S-NN=200 GeV".PHYSICAL REVIEW C 76(2007):13.