Twist-3 distribution amplitudes of scalar mesons from QCD sum rules
Lv CD(吕才典); Wang YM(王玉明); Zou H(邹浩); Lu, CD; Wang, YM; Zou, H
刊名PHYSICAL REVIEW D
2007
卷号75期号:5页码:56001
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.75.056001
通讯作者CCAST, World Lab, Beijing 100080, Peoples R China ; Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
英文摘要We study the twist-3 distribution amplitudes for scalar mesons made up of two valence quarks based on QCD sum rules. By choosing the proper correlation functions, we derive the moments of the scalar mesons up to the first two orders. Making use of these moments, we then calculate the first two Gegenbauer coefficients for twist-3 distribution amplitudes of scalar mesons. It is found that the second Gegenbauer coefficients of scalar density twist-3 distribution amplitudes for K-0(*) and f(0) mesons are quite close to that for a(0), which indicates that the SU(3) symmetry breaking effect is tiny here. However, this effect could not be neglected for the forth Gegenbauer coefficients of scalar twist-3 distribution amplitudes between a(0) and f(0). Besides, we also observe that the first two Gegenbauer coefficients corresponding to the tensor current twist-3 distribution amplitudes for all the a(0), K-0(*) and f(0) are very small. The renormalization group evolution of condensates, quark masses, decay constants and moments are considered in our calculations. As a by-product, it is found that the masses for isospin I=1, 1/2 scalar mesons are around 1.27 similar to 1.41 GeV and 1.44 similar to 1.56 GeV respectively, while the mass for isospin state composed of (s) over bars is 1.62 similar to 1.73 GeV.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000245333000069
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被引频次:24[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/311005/240694
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Lv CD,Wang YM,Zou H,et al. Twist-3 distribution amplitudes of scalar mesons from QCD sum rules[J]. PHYSICAL REVIEW D,2007,75(5):56001.
APA 吕才典,王玉明,邹浩,Lu, CD,Wang, YM,&Zou, H.(2007).Twist-3 distribution amplitudes of scalar mesons from QCD sum rules.PHYSICAL REVIEW D,75(5),56001.
MLA 吕才典,et al."Twist-3 distribution amplitudes of scalar mesons from QCD sum rules".PHYSICAL REVIEW D 75.5(2007):56001.
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