Proton momentum and angular momentum decompositions with overlap fermions
文献类型：期刊论文
| 作者 | Wang, Gen; Yang, Yi-Bo ; Liang, Jian5,6; Draper, Terrence; Liu, Keh-Fei
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| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2022 |
| 卷号 | 106期号:1页码:14512 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.106.014512 |
| 英文摘要 | We present a calculation of the proton momentum and angular momentum decompositions using overlap fermions on a 2 + 1-flavor RBC/UKQCD domain-wall lattice at 0.143 fm with a pion mass of 171 MeV which is close to the physical one. A complete determination of the momentum and angular momentum fractions carried by up, down, strange, and glue inside the proton has been done with valence pion masses varying from 171 to 391 MeV. We have utilized fast Fourier transform on the stochastic-sandwich method for connected-insertion parts and the cluster-decomposition error reduction technique technique for disconnected-insertion parts has been used to reduce statistical errors. The full nonperturbative renormalization and mixing between the quark and glue operators are carried out. The final results are normalized with the momentum and angular momentum sum rules and reported at the physical valence pion mass at MS(mu = 2 GeV). The renormalized momentum fractions for the quarks and glue are (x)q = 0.491(20)(23) and (x)g = 0.509(20)(23), respectively, and the renormalized total angular momentum fractions for quarks and glue are 2Jq = 0.539(22)(44) and 2Jg = 0.461(22)(44), respectively. The quark spin fraction is E = 0.405(25)(37) from our previous work and the quark orbital angular momentum fraction is deduced from 2Lq = 2Jq - E to be 0.134(22)(44). |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27833]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA 2.Int CAS Ctr Theoret Phys Asia Pacific, Beijing 100019, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 6.South China Normal Univ, Inst Quantum Matter, Guangdong Prov Key Lab Nucl Sci, Guangzhou 510006, Peoples R China 7.South China Normal Univ, Southern Nucl Sci Comp Ctr, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou 510006, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Gen,Yang, Yi-Bo,Liang, Jian,et al. Proton momentum and angular momentum decompositions with overlap fermions[J]. PHYSICAL REVIEW D,2022,106(1):14512. |
| APA | Wang, Gen,Yang, Yi-Bo,Liang, Jian,Draper, Terrence,&Liu, Keh-Fei.(2022).Proton momentum and angular momentum decompositions with overlap fermions.PHYSICAL REVIEW D,106(1),14512. |
| MLA | Wang, Gen,et al."Proton momentum and angular momentum decompositions with overlap fermions".PHYSICAL REVIEW D 106.1(2022):14512. |
入库方式： OAI收割
来源：理论物理研究所
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