Spin alignment measurements using vector mesons with ALICE detector at the LHC

doi:10.1016/j.nuclphysa.2018.12.004

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

	Spin alignment measurements using vector mesons with ALICE detector at the LHC
	Singh, R ; Acharya, S ; Acosta, FT ; Adamova, D ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N ; Ahammed, Z
刊名	NUCLEAR PHYSICS A
	2019
卷号	982 期号:-页码:515—518
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2018.12.004
文献子类	期刊论文
英文摘要	We present new measurements related to spin alignment of K(0) vector mesons at mid-rapidity for Pb-Pb collisions at root s(NN) = 2.76 and 5.02 TeV. The spin alignment measurements are carried out with respect to production plane and 2nd order event plane. At low p(T) the spin density matrix element rho(00) for K(0) is found to have values slightly below 1/3, while it is consistent with 1/3, i.e. no spin alignment, at high p(T). Similar values of rho(00) are observed with respect to both production plane and event plane. Within statistical and systematic uncertainties, rho(00) values are also found to be independent of root s(NN). rho(00) also shows centrality dependence with maximum deviation from 1/3 for mid-central collisions with respect to both the kinematic planes. The measurements for K*(0) in pp collisions at root s = 13 TeV and for K-s(0) (a spin 0 hadron) in 20-40% central Pb-Pb collisions at root s(NN) = 2.76 TeV are consistent with no spin alignment.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31823]
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
作者单位	1.INFN, Sez Torino, Alessandria, Italy; 2.Dipartimento Interateneo Fis M Merlin, Bari, Italy; 3.Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl Phys, Moscow, Russia; 4.Wayne State Univ, 666 W Hancock St, Detroit, MI 48201 USA; 5.Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia; 6.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine; 7.Bose Inst, Dept Phys, Kolkata, India; 8.CAPSS, Kolkata, India; 9.Budker Inst Nucl Phys, Novosibirsk, Russia; 10.Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA;
推荐引用方式 GB/T 7714	Singh, R,Acharya, S,Acosta, FT,et al. Spin alignment measurements using vector mesons with ALICE detector at the LHC[J]. NUCLEAR PHYSICS A,2019,982(-):515—518.
APA	Singh, R.,Acharya, S.,Acosta, FT.,Adamova, D.,Adolfsson, J.,...&Zou, S.(2019).Spin alignment measurements using vector mesons with ALICE detector at the LHC.NUCLEAR PHYSICS A,982(-),515—518.
MLA	Singh, R,et al."Spin alignment measurements using vector mesons with ALICE detector at the LHC".NUCLEAR PHYSICS A 982.-(2019):515—518.