Production and ratio of pi, K, p, and Lambda in Pb plus Pb collisions at root s(NN)=2.76 TeV

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Production and ratio of pi, K, p, and Lambda in Pb plus Pb collisions at root s(NN)=2.76 TeV
	Zhang, S ; Han, LX ; Ma, YG ; Chen, JH ; Zhong, C
刊名	PHYSICAL REVIEW C
	2014
卷号	89 期号:3
关键词	NUCLEUS-NUCLEUS COLLISIONS HEAVY-ION COLLISIONS QUARK-GLUON PLASMA EQUILIBRATION COLLABORATION PERSPECTIVE THERMINATOR GENERATOR FLOW LHC
ISSN号	0556-2813
通讯作者	ygma@sinap.ac.cn
英文摘要	The particle production and their ratios for pi, K, p, and Lambda are studied in Pb + Pb collisions at root s(NN) = 2.76 TeV based on a blast-wave model with thermal equilibrium mechanism. The transverse momentum spectra of the above-mentioned particles at the kinetic freeze-out stage are discussed. The modification of the inverse slope of pion transverse momentum spectrum due to resonance decay has also been investigated. In addition, we found that the antiparticles-to-particles ratio as well as the kaons-to-pions ratio agree with the data by the LHC-ALICE Collaboration reasonably well, while the p/pi ratio is overestimated by a factor of 1.5, similar to those from other thermal model calculations. It is found that the ratios of p/pi and K/pi are dominated by the radial flow but slightly affected by the baryon chemical potential. Our study thus constrains the parameters at the chemical and kinetic freeze-out stages within the framework of thermal model in Pb + Pb collisions at root s(NN) = 2.76 TeV, and will help us better understand the properties of the dense and hot matter created in high-energy heavy-ion collisions at freeze-out stage.
收录类别	SCI
语种	英语
WOS记录号	WOS:000334294500008
公开日期	2015-03-13
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/14337]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Zhang, S,Han, LX,Ma, YG,et al. Production and ratio of pi, K, p, and Lambda in Pb plus Pb collisions at root s(NN)=2.76 TeV[J]. PHYSICAL REVIEW C,2014,89(3).
APA	Zhang, S,Han, LX,Ma, YG,Chen, JH,&Zhong, C.(2014).Production and ratio of pi, K, p, and Lambda in Pb plus Pb collisions at root s(NN)=2.76 TeV.PHYSICAL REVIEW C,89(3).
MLA	Zhang, S,et al."Production and ratio of pi, K, p, and Lambda in Pb plus Pb collisions at root s(NN)=2.76 TeV".PHYSICAL REVIEW C 89.3(2014).