Pion to photon transition form factors with basis light-front quantization

doi:10.1103/PhysRevD.104.094034

	Pion to photon transition form factors with basis light-front quantization
	Mondal, Chandan 1,2; Nair, Sreeraj 1,2; Jia, Shaoyang 3,4; Zhao, Xingbo 1,2; Vary, James P.3
刊名	PHYSICAL REVIEW D
	2021-11-22
卷号	104 期号:9 页码:11
ISSN号	2470-0010
DOI	10.1103/PhysRevD.104.094034
通讯作者	Mondal, Chandan(mondal@impcas.ac.cn) ; Nair, Sreeraj(sreeraj@impcas.ac.cn) ; Jia, Shaoyang(syjia@anl.gov) ; Zhao, Xingbo(xbzhao@impcas.ac.cn) ; Vary, James P.(jvary@iastate.edu)
英文摘要	We obtain the distribution amplitude (DA) of the pion from its light-front wave functions in the basis light-front quantization framework. This light-front wave function of the pion is given by the lowest eigenvector of a light-front effective Hamiltonian consisting a three-dimensional confinement potential and the color-singlet Nambu-Jona-Lasinion interaction both between the constituent quark and antiquark. The quantum chromodynamics evolution of the DA is subsequently given by the perturbative EfremovRadyushkin-Brodsky-Lepage evolution equation. Based on this DA, we then evaluate the singly and doubly virtual transition form factors in the spacelike region for pi 0 - gammagamma and pi 0 - gammagamma* processes using the hard-scattering formalism. Our prediction for the pion-photon transition form factor agrees well with data reported by the Belle Collaboration. However, in the large Q2 region it deviates from the rapid growth reported by the BABAR Collaboration. Meanwhile, our result on the pi 0 - gamma* gamma* transition form factor is also consistent with other theoretical approaches and agrees with the scaling behavior predicted by perturbative quantum chromodynamics.
资助项目	Institute of Modern Physics, Chinese Academy of Sciences[E129952YR0] ; Chinese Academy of Sciences Presidents International Fellowship Initiative[2021PM0023] ; Chinese Academy of Sciences Presidents International Fellowship Initiative[2021PM0021] ; Institute of Modern Physics, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[ZDB-SLY-7020] ; Natural Science Foundation of Gansu Province, China[20JR10RA067] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB34000000] ; U.S. Department of Energy, Office of Science, Office of Nuclear Physics[DE-AC02-06CH11357] ; Department of Energy[DE-FG0287ER40371] ; Department of Energy[DE-SC0018223]
WOS关键词	JONA-LASINIO MODEL ; ASYMPTOTIC-BEHAVIOR ; DISTRIBUTION AMPLITUDE ; PARTON DISTRIBUTIONS ; EXCLUSIVE PROCESSES ; NAMBU ; MESONS ; QCD ; FACTORIZATION ; MOMENT
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000721580000003
资助机构	Institute of Modern Physics, Chinese Academy of Sciences ; Chinese Academy of Sciences Presidents International Fellowship Initiative ; Institute of Modern Physics, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Natural Science Foundation of Gansu Province, China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; U.S. Department of Energy, Office of Science, Office of Nuclear Physics ; Department of Energy
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/140042]
专题	中国科学院近代物理研究所
通讯作者	Mondal, Chandan; Nair, Sreeraj; Jia, Shaoyang; Zhao, Xingbo; Vary, James P.
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 3.Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA 4.Argonne Natl Lab, Phys Div, 9700 S Cass Ave, Argonne, IL 60439 USA
推荐引用方式 GB/T 7714	Mondal, Chandan,Nair, Sreeraj,Jia, Shaoyang,et al. Pion to photon transition form factors with basis light-front quantization[J]. PHYSICAL REVIEW D,2021,104(9):11.
APA	Mondal, Chandan,Nair, Sreeraj,Jia, Shaoyang,Zhao, Xingbo,&Vary, James P..(2021).Pion to photon transition form factors with basis light-front quantization.PHYSICAL REVIEW D,104(9),11.
MLA	Mondal, Chandan,et al."Pion to photon transition form factors with basis light-front quantization".PHYSICAL REVIEW D 104.9(2021):11.