Dynamical spin effects in the holographic light-front wavefunctions of light pseudoscalar mesons

doi:10.1103/PhysRevD.98.034010

	Dynamical spin effects in the holographic light-front wavefunctions of light pseudoscalar mesons
	Ahmady, Mohammad 1; Mondal, Chandan 2; Sandapen, Ruben 1,3
刊名	PHYSICAL REVIEW D
	2018-08-13
卷号	98 期号:3 页码:034010
ISSN号	2470-0010
DOI	10.1103/PhysRevD.98.034010
英文摘要	We quantify the importance of dynamical spin effects in the holographic light-front wavefunctions of the pion, kaon, eta and eta'. Using a universal AdS/QCD scale and constituent quark masses, we find that such effects are maximal in the pion where they lead to an excellent simultaneous description of a wide range of data: the decay constant, charge radius, spacelike EM and transition form factors, as well as, after QCD evolution, both the parton distribution function and the parton distribution amplitude data from Fermilab. These dynamical spin effects lead up to a 30% chance of finding the valence quark and antiquark with aligned spins in the pion. The situation is very different for the kaon, where a simultaneous description of the available data (decay constant, radius and spacelike EM form factor) prefer no dynamical spin effects at all. The situation is less clear for the eta and eta': while their radiative decay widths data are consistent with dynamical spin effects only in eta', the data on their spacelike transition form factors clearly favor maximal dynamical spin effects in both mesons.
资助项目	National Science and Engineering Research Council of Canada (NSERC)[SAPIN-2017-00033] ; National Science and Engineering Research Council of Canada (NSERC)[SAPIN-2017-00031] ; China Postdoctoral Science Foundation[2017M623279]
WOS关键词	PION FORM-FACTOR ; QUANTUM CHROMODYNAMICS ; PARTON RECOMBINATION ; ASYMPTOTIC-BEHAVIOR ; EXCLUSIVE PROCESSES ; EVOLUTION EQUATION ; QCD ; MOMENTUM ; ETA' ; ELECTROPRODUCTION
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000441465400003
资助机构	National Science and Engineering Research Council of Canada (NSERC) ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/59289]
专题	中国科学院近代物理研究所
作者单位	1.Mt Allison Univ, Dept Phys, Brunswick, NB E4L 1E6, Canada 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 3.Acadia Univ, Dept Phys, Wolfville, NS B4P 2R6, Canada
推荐引用方式 GB/T 7714	Ahmady, Mohammad,Mondal, Chandan,Sandapen, Ruben. Dynamical spin effects in the holographic light-front wavefunctions of light pseudoscalar mesons[J]. PHYSICAL REVIEW D,2018,98(3):034010.
APA	Ahmady, Mohammad,Mondal, Chandan,&Sandapen, Ruben.(2018).Dynamical spin effects in the holographic light-front wavefunctions of light pseudoscalar mesons.PHYSICAL REVIEW D,98(3),034010.
MLA	Ahmady, Mohammad,et al."Dynamical spin effects in the holographic light-front wavefunctions of light pseudoscalar mesons".PHYSICAL REVIEW D 98.3(2018):034010.