Revisiting the pion leading-twist distribution amplitude within the QCD background field theory

	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)
刊名	PHYSICAL REVIEW D
	2014
卷号	90 期号:1 页码:16004
英文摘要	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.
学科主题	Astronomy & Astrophysics; Physics
收录类别	SCI
WOS记录号	WOS:000338740800009
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225279]
专题	中国科学院高能物理研究所
推荐引用方式 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.