Improved estimates of the pion-photon transition form factor in the (1 <= Q(2) <= 5) GeV2 range and their theoretical uncertainties
文献类型：会议论文
| 作者 | Mikhailov, S. V.1; Pimikov, A. V.1,2; Stefanis, N. G.3; Foka, Y; Brambilla, N; Kovalenko, V |
| 出版日期 | 2017 |
| 卷号 | 137 |
| DOI | 10.1051/epjconf/201713705016 |
| 英文摘要 | We consider the pion-photon transition form factor at low to intermediate spacelike momenta within the theoretical framework of light-cone sum rules. We derive predictions which take into account all currently known contributions stemming from QCD perturbation theory up to the next-to-next-to-leading order (NNLO) and by including all twist terms up to order six. In order to enable a more detailed comparison with forthcoming high-precision data, we also estimate the main systematic theoretical uncertainties, stemming from various sources, and discuss their influence on the calculations - in particular the dominant one related to the still uncalculated part of the NNLO contribution. The analysis addresses, in broad terms, also the role of the twist-two pion distribution amplitude derived with different approaches. |
| 会议录 | XIITH QUARK CONFINEMENT AND THE HADRON SPECTRUM
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| 会议录出版者 | E D P SCIENCES |
| 会议录出版地 | 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE |
| 语种 | 英语 |
| 资助项目 | NSFC[11650110431] ; NSFC[11575254] |
| WOS研究方向 | Physics |
| WOS记录号 | WOS:000404126100068 |
| 源URL | [http://119.78.100.186/handle/113462/57489]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Mikhailov, S. V. |
| 作者单位 | 1.JINR, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany |
| 推荐引用方式 GB/T 7714 | Mikhailov, S. V.,Pimikov, A. V.,Stefanis, N. G.,et al. Improved estimates of the pion-photon transition form factor in the (1 <= Q(2) <= 5) GeV2 range and their theoretical uncertainties[C]. 见:. |
入库方式： OAI收割
来源：近代物理研究所
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