Systematic estimation of theoretical uncertainties in the calculation of the pion-photon transition form factor using light-cone sum rules

doi:10.1103/PhysRevD.93.114018

	Systematic estimation of theoretical uncertainties in the calculation of the pion-photon transition form factor using light-cone sum rules
	Mikhailov, S. V.1; Pimikov, A. V.1,2; Stefanis, N. G.3
刊名	PHYSICAL REVIEW D
	2016-06-20
卷号	93 页码:14
ISSN号	2470-0010
DOI	10.1103/PhysRevD.93.114018
英文摘要	We consider the calculation of the pion-photon transition form factor F-gamma(gamma pi 0)(Q(2)) within light-cone sum rules focusing attention to the low-mid region of momenta. The central aim is to estimate the theoretical uncertainties which originate from a wide variety of sources related to (i) the relevance of next-to-next-to-leading order radiative corrections (ii) the influence of the twist-four and the twist-six term (iii) the sensitivity of the results on auxiliary parameters, like the Borel scale M-2, (iv) the role of the phenomenological description of resonances, and (v) the significance of a small but finite virtuality of the quasireal photon. Predictions for F-gamma(gamma pi 0)(Q(2)) are presented which include all these uncertainties and found to comply within the margin of experimental error with the existing data in the Q(2) range between 1 and 5 GeV2, thus justifying the reliability of the applied calculational scheme. This provides a solid basis for confronting theoretical predictions with forthcoming data bearing small statistical errors.
资助项目	Heisenberg-Landau Program[2015] ; Heisenberg-Landau Program[2016] ; Russian Foundation for Basic Research[14-01-00647] ; Russian Foundation for Basic Research[15-52-04023] ; JINR-BelRFFR Grant[F16D-004] ; Chinese Academy of Sciences President's International Fellowship Initiative[2016PM053] ; Major State Basic Research Development Program in China[2015CB856903] ; National Natural Science Foundation of China[11575254] ; National Natural Science Foundation of China[11175215]
WOS关键词	WAVE-FUNCTION ; QUANTUM CHROMODYNAMICS ; EVOLUTION KERNELS ; QCD ; MESON
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000378203800005
资助机构	Heisenberg-Landau Program ; Russian Foundation for Basic Research ; JINR-BelRFFR Grant ; Chinese Academy of Sciences President's International Fellowship Initiative ; Major State Basic Research Development Program in China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/42921]
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, Univ Str 150, D-44780 Bochum, Germany
推荐引用方式 GB/T 7714	Mikhailov, S. V.,Pimikov, A. V.,Stefanis, N. G.. Systematic estimation of theoretical uncertainties in the calculation of the pion-photon transition form factor using light-cone sum rules[J]. PHYSICAL REVIEW D,2016,93:14.
APA	Mikhailov, S. V.,Pimikov, A. V.,&Stefanis, N. G..(2016).Systematic estimation of theoretical uncertainties in the calculation of the pion-photon transition form factor using light-cone sum rules.PHYSICAL REVIEW D,93,14.
MLA	Mikhailov, S. V.,et al."Systematic estimation of theoretical uncertainties in the calculation of the pion-photon transition form factor using light-cone sum rules".PHYSICAL REVIEW D 93(2016):14.