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题名: Distribution amplitudes of radially-excited pi and K mesons
作者: Li, BL ;  Chang, L ;  Gao, F ;  Roberts, CD ;  Schmidt, SM ;  Zong, HS
刊名: PHYSICAL REVIEW D
出版日期: 2016
卷号: 93, 期号:11, 页码:114033
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.93.114033
通讯作者: Li, BL (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
文章类型: Article
英文摘要: A symmetry-preserving truncation of the two-body bound state problem in relativistic quantum field theory is used to compute the leading-twist parton distribution amplitudes (PDAs) for the first radial excitations of the pi and K mesons. In common with ground states in these channels, the PDAs are found to be dilated with respect to the relevant conformal-limit form and skewed toward the heavier valence quark in asymmetric systems. In addition, the PDAs of radially excited pseudoscalar mesons are not positive definite, owing to the fact that dynamical chiral symmetry breaking (DCSB) forces the leptonic decay constant of such states to vanish in the chiral limit. These results highlight that DCSB is expressed visibly in every pseudoscalar meson constituted from light quarks. Hence, so long as its impact is empirically evident in the pseudoscalar members of a given spectrum level, it is unlikely that chiral symmetry is restored in any of the hadrons that populate this level.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: VECTOR CURRENT HYPOTHESIS ;  CHIRAL QUARK-MODEL ;  DECAY CONSTANT ;  QUANTUM CHROMODYNAMICS ;  EXCLUSIVE PROCESSES ;  SYMMETRY-BREAKING ;  LATTICE QCD ;  SUM-RULES ;  BEHAVIOR ;  PHYSICS
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11175004, 11275097, 11435001, 11475085, 11535005] ;  National Key Basic Research Program of China [G2013CB834400, 2015CB856900] ;  U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC02-06CH11357] ;  Chinese Ministry of Education, under the International Distinguished Professor program
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21609
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Li, BL,Chang, L,Gao, F,et al. Distribution amplitudes of radially-excited pi and K mesons[J]. PHYSICAL REVIEW D,2016,93(11):114033.
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