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Revisiting the pion leading-twist distribution amplitude within the QCD background field theory
Zhong T(钟涛); Zhong, T; Wu, XG; Wang, ZG; Huang, T; Fu, HB; Han, HY;黄涛(理)
2014
发表期刊PHYSICAL REVIEW D
卷号90期号:1页码:16004
摘要We study the pion leading-twist distribution amplitude (DA) within the framework of Shifman-VainshteinZakharov sum rules under the background field theory. To improve the accuracy of the sum rules, we expand both the quark propagator and the vertex dz D. _ n of the correlator up to dimension-six operators in the background field theory. The sum rules for the pion DA moments are obtained, in which all condensates up to dimension-six have been taken into consideration. Using the sum rules, we obtain h.2 ij1 GeV 0.338 +/- 0.032, h.4 ij1 GeV 0.211 +/- 0.030 and h.6 ij1 GeV 0.163 +/- 0.030. It is shown that the dimension-six condensates shall provide sizable contributions to the pion DA moments. We show that the first Gegenbauer moment of the pion leading-twist DA is ap2 j1 GeV 0.403 +/- 0.093, which is consistent with those obtained in the literature within errors but prefers a larger central value as indicated by lattice QCD predictions.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.90.016004
收录类别SCI
WOS记录号WOS:000338740800009
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225279
专题理论物理室
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GB/T 7714
Zhong T,Zhong, T,Wu, XG,et al. Revisiting the pion leading-twist distribution amplitude within the QCD background field theory[J]. PHYSICAL REVIEW D,2014,90(1):16004.
APA 钟涛.,Zhong, T.,Wu, XG.,Wang, ZG.,Huang, T.,...&Han, HY;黄涛.(2014).Revisiting the pion leading-twist distribution amplitude within the QCD background field theory.PHYSICAL REVIEW D,90(1),16004.
MLA 钟涛,et al."Revisiting the pion leading-twist distribution amplitude within the QCD background field theory".PHYSICAL REVIEW D 90.1(2014):16004.
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