Ground state pseudoscalar mesons on the light front: From the light to heavy sector

doi:10.1103/PhysRevD.104.094016

	Ground state pseudoscalar mesons on the light front: From the light to heavy sector
	Shi, Chao 1; Li, Ming 1; Chen, Xurong 2,3; Jia, Wenbao 1
刊名	PHYSICAL REVIEW D
	2021-11-10
卷号	104 期号:9 页码:11
ISSN号	2470-0010
DOI	10.1103/PhysRevD.104.094016
通讯作者	Shi, Chao(cshi@nuaa.edu.cn)
英文摘要	We extract the leading Fock state light-front wave functions (LF-LFWFs) of both the light and heavy pseudoscalar mesons, e.g., the pion (at masses of 130, 310, and 690 MeV), eta(c) and eta(b), from their covariant Bethe-Salpeter wave functions within the rainbow-ladder truncation. It is shown that the LF-LFWFs get narrower in x (the longitudinal momentum fraction of the meson carried by the quark) with the increasing current quark mass, and the leading twist parton distribution amplitudes inherit this feature. In the case of the pion, the LF-LFWFs only contribute about 30% of the total Fock state normalization, indicating the presence of significant higher Fock states within. In contrast, in the cases of the eta(c) and eta(b), the LF-LFWFs contribute more than 90%, suggesting the Q (Q) over bar valence Fock state truncation as a good approximation for heavy mesons. We thus study the three-dimensional parton distributions of the eta(c) and eta(b) with the unpolarized generalized parton distribution function (GPD) and the transverse momentum-dependent parton distribution function. Through the gravitational form factors in connection with the GPD, the mass radii of the eta(c) and eta(b) in the light cone frame are determined to be r(E,LC)(eta c) = 0.150 and r(E,LC)(eta b) = 0.089 fm, respectively.
资助项目	National Natural Science Foundation of China[11905104] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB34030301]
WOS关键词	CONE WAVE-FUNCTION ; DISTRIBUTION AMPLITUDES ; ASYMPTOTIC-BEHAVIOR ; PARTON DISTRIBUTION ; EXCLUSIVE PROCESSES ; QUARK ; EQUATIONS ; MODEL ; MASS
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000718588100005
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/140018]
专题	中国科学院近代物理研究所
通讯作者	Shi, Chao
作者单位	1.Nanjing Univ Aeronaut & Astronaut, Dept Nucl Sci & Technol, Nanjing 210016, Peoples R China 2.South China Normal Univ, Inst Quantum Matter, Guangdong Prov Key Lab Nucl Sci, Guangzhou 510006, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Shi, Chao,Li, Ming,Chen, Xurong,et al. Ground state pseudoscalar mesons on the light front: From the light to heavy sector[J]. PHYSICAL REVIEW D,2021,104(9):11.
APA	Shi, Chao,Li, Ming,Chen, Xurong,&Jia, Wenbao.(2021).Ground state pseudoscalar mesons on the light front: From the light to heavy sector.PHYSICAL REVIEW D,104(9),11.
MLA	Shi, Chao,et al."Ground state pseudoscalar mesons on the light front: From the light to heavy sector".PHYSICAL REVIEW D 104.9(2021):11.