Improved quark coalescence model for spin alignment and polarization of hadrons

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成果类型：

期刊论文

作者：

Sheng, Xin-Li*;Wang, Qun;Wang, Xin-Nian

通讯作者：

Sheng, Xin-Li

作者机构：

[Sheng, Xin-Li; Wang, Qun] Univ Sci & Technol China, Peng Huanwu Ctr Fundamental Theory, Hefei 230026, Anhui, Peoples R China.

[Sheng, Xin-Li; Wang, Qun] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China.

[Wang, Xin-Nian] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China.

[Wang, Xin-Nian] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.

[Wang, Xin-Nian] Lawrence Berkeley Natl Lab, Nucl Sci Div, MS 70R0319, Berkeley, CA 94720 USA.

通讯机构：

[Sheng, Xin-Li] U

Univ Sci & Technol China, Peng Huanwu Ctr Fundamental Theory, Hefei 230026, Anhui, Peoples R China.

Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China.

语种：

英文

期刊：

PHYSICAL REVIEW D

ISSN：

2470-0010

年：

2020

卷：

102

期：

页码：

056013

DOI：

10.1103/PhysRevD.102.056013

基金类别：

National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [11935007, 11861131009, 11890714]; Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB34030102]

机构署名：

本校为其他机构

院系归属：

物理科学与技术学院

摘要：

We propose an improved quark coalescence model for spin alignment of vector mesons and polarization of baryons by spin density matrix with phase space dependence. The spin density matrix is defined through Wigner functions. Within the model we propose an understanding of spin alignments of vector mesons phi and K*(0) (including (K) over bar*(0)) in the static limit: a large positive deviation of rho(00) for phi mesons from 1/3 may come from the electric part of the vector phi field, while a negative deviation of rho(00) for K*(0) may come from the electric part of vorticity tensor fields. Such...

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Improved quark coalescence model for spin alignment and polarization of hadrons

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