Covariant Structure of Light-Front Wave Functions and the Behavior of Hadronic Form Factors.

Brodsky, S. J. ; Hiller, J. R. ; Hwang, D. S. ; Karmanov, V. A.

Technical Information Center Oak Ridge Tennessee

关键词: Wave functions;    Hadrons;    Form factors;    Analytical functions;    Quarks;   

RP-ID  :  DE2004826513

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We study the analytic structure of light-front wave functions (LFWFs) and its consequences for hadron form factors using an explicitly Lorentz-invariant formulation of the front form. The normal to the light front is specified by a general null vector (omega)(sup (mu)). The LFWFs with definite total angular momentum are eigenstates of a kinematic angular momentum operator and satisfy all Lorentz symmetries. They are analytic functions of the invariant mass squared of the constituents M(sub 0)(sup 2) = ((Sigma)k(sup (mu)))(sup 2) and the light-cone momentum fractions x(sub i) = k(sub i)(omega)/p(omega) multiplied by invariants constructed from the spin matrices, polarization vectors, and (omega)(sup (mu)). These properties are illustrated using known nonperturbative eigensolutions of the Wick-Cutkosky model. We analyze the LFWFs introduced by Chung and Coester to describe static and low momentum properties of the nucleons.