Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at,root(NN)-N-S=200 GeV

doi:10.1016/j.physletb.2006.04.032

	Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at,root(NN)-N-S=200 GeV
	Adams, J.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D.; Anderson, M.; Arkhipkin, D.; Averichev, G. S.; Badyal, S. K.; Bai, Y.
刊名	PHYSICS LETTERS B
	2006-06-08
卷号	637 页码:161-169
关键词	particle production perturbative quantum chromodynamics fragmentation function Cronin effect and x(T)-scating
ISSN号	0370-2693
DOI	10.1016/j.physletb.2006.04.032
英文摘要	We present the transverse momentum (PT) spectra for identified charged pions, protons and anti-protons from p + p and d + Au collisions at root sNN = 200 GeV. The spectra are measured around midrapidity (vertical bar y vertical bar < 0.5) over the range of 0.3 < PT < 10 GeV/c with particle identification from the ionization energy loss and its relativistic rise in the time projection chamber and time-of-flight in STAR. The charged pion and proton + anti-proton spectra at high PT in p + p and d + Au collisions are in good agreement with a phenomenological model (EPOS) and with next-to-leading order perturbative quantum chromodynamic (NLO pQCD) calculations with a specific fragmentation scheme and factorization scale. We found that all proton, anti-proton and charged pion spectra in p + p collisions follow x(T)-scating for the momentum range where particle production is dominated by hard processes (p(T) greater than or similar to 2 GeV/c). The nuclear modification factor around midrapidity is found to be greater than unity for charged pions and to be even larger for protons at 2 < PT < 5 GeV/c. (c) 2006 Elsevier B.V. All rights reserved.
WOS关键词	COLOR GLASS CONDENSATE ; QUARK-GLUON PLASMA ; P-P COLLISIONS ; FRAGMENTATION FUNCTIONS ; INCLUSIVE PRODUCTION ; NUCLEUS COLLISIONS ; BARYON PRODUCTION ; PERTURBATIVE QCD ; CROSS-SECTIONS ; JETS
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000238278900004
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/27004]
专题	中国科学院近代物理研究所
通讯作者	Mohanty, B.
作者单位	1.Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Univ Birmingham, Birmingham B15 2TT, 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.Creighton Univ, Omaha, NE 68178 USA
推荐引用方式 GB/T 7714	Adams, J.,Aggarwal, M. M.,Ahammed, Z.,et al. Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at,root(NN)-N-S=200 GeV[J]. PHYSICS LETTERS B,2006,637:161-169.
APA	Adams, J..,Aggarwal, M. M..,Ahammed, Z..,Amonett, J..,Anderson, B. D..,...&Zuo, J. X..(2006).Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at,root(NN)-N-S=200 GeV.PHYSICS LETTERS B,637,161-169.
MLA	Adams, J.,et al."Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at,root(NN)-N-S=200 GeV".PHYSICS LETTERS B 637(2006):161-169.