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Implication on the pion distribution amplitude from the pion-photon transition form factor with the new BABAR data
Wu, XG; 黄涛(理); Huang, T
2010
Source PublicationPHYSICAL REVIEW D
Volume82Issue:3Pages:34024
Corresponding Author[Wu, Xing-Gang] Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China ; [Huang, Tao] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Huang, Tao] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
SubtypeArticle
AbstractThe new BABAR data on the pion-photon transition form factor arouses people's interest for the determination of the pion distribution amplitude. To explain the data, we take both the leading valence quark state's and the nonvalence quark state's contributions into consideration, where the valence quark part up to next-to-leading order is presented and the nonvalence quark part is estimated by a phenomenological model based on its limiting behavior at both Q(2) -> 0 and Q(2) -> infinity. Our results show that to be consistent with the new BABAR data at the large Q(2) region, a broader amplitude other than the asymptoticlike pion distribution amplitude should be adopted. The broadness of the pion distribution amplitude is controlled by a parameter B. It has been found that the new BABAR data at low and high energy regions can be explained simultaneously by setting B to be around 0.60, in which the pion distribution amplitude is closed to the Chernyak-Zhitnitsky form.
Subject AreaAstronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.82.034024
URL查看原文
Indexed BySCI ; INSPIREHEP ; ADS
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000281070600005
ADS Bibcode2010PhRvD..82c4024W
ADS URLhttps://ui.adsabs.harvard.edu/abs/2010PhRvD..82c4024W
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2010PhRvD..82c4024W/citations
inspireid855244
inspireURLhttps://inspirehep.net/literature/855244
Citation statistics
Cited Times:65 [INSPIRE]
Cited Times:66 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/240560
Collection理论物理室
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Wu, XG,Huang T,Huang, T. Implication on the pion distribution amplitude from the pion-photon transition form factor with the new BABAR data[J]. PHYSICAL REVIEW D,2010,82(3):34024.
APA Wu, XG,黄涛,&Huang, T.(2010).Implication on the pion distribution amplitude from the pion-photon transition form factor with the new BABAR data.PHYSICAL REVIEW D,82(3),34024.
MLA Wu, XG,et al."Implication on the pion distribution amplitude from the pion-photon transition form factor with the new BABAR data".PHYSICAL REVIEW D 82.3(2010):34024.
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