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题名: Distribution amplitudes of light-quark mesons from lattice QCD
作者: Segovia, J;  Chang, L;  Cloet, IC;  Roberts, CD;  Schmidt, SM;  Zong, HS
刊名: PHYSICS LETTERS B
出版日期: 2014
卷号: 731, 期号:-, 页码:13-18
关键词: PION FORM-FACTOR ;  QUANTUM CHROMODYNAMICS ;  EXCLUSIVE PROCESSES ;  ASYMPTOTIC-BEHAVIOR ;  GAUGE-THEORIES ;  FACTORIZATION ;  DECAYS ;  EXTRACTION ;  EQUATIONS ;  NUCLEON
学科分类: Physics
DOI: 10.1016/j.physletb.2014.02.006
通讯作者: Roberts, CD (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
部门归属: [Segovia, Jorge
英文摘要: We exploit a method introduced recently to determine parton distribution amplitudes (PDAs) from minimal information in order to obtain light-quark pseudoscalar and vector meson PDAs from the limited number of moments produced by numerical simulations of lattice-regularised QCD. Within errors, the PDAs of pseudoscalar and vector mesons constituted from the same valence quarks are identical; they are concave functions, whose dilation expresses the strength of dynamical chiral symmetry breaking; and SU(3)-flavour symmetry is broken nonperturbatively at the level of 10%. Notably, the appearance of precision in the lattice moments is misleading. The moments also exhibit material dependence on lattice volume, especially for the pion. Improvements need therefore be made before an accurate, unified picture of the light-front structure of light-quark pseudoscalar and vector mesons is revealed. (C) 2014 Published by Elsevier BAT. This is an open access article under the CC BY license (http://creativecommons.orgilicenses/by/3.01).
资助者: University of Adelaide; Australian Research Council [FL0992247]; Forschungszentrum Julich GmbH; Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]; GAUSTEQ (Germany); GAUSTEQ (U.S. Nuclear Theory Exchange Program for QCD Studies of Hadrons and Nuclei) [DE-SC0006758]; National Natural Science Foundation of China [11275097, 10935001, 11075075]; Research Fund for the Doctoral Program of Higher Education [2012009111002]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000334094500003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15790
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Recommended Citation:
Segovia, J,Chang, L,Cloet, IC,et al. Distribution amplitudes of light-quark mesons from lattice QCD[J]. PHYSICS LETTERS B,2014,731(-):13-18.
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