NUCLEON AND PION FORM FACTORS IN DIFFERENT FORMS OF RELATIVISTIC KINEMATICS

2004/11/08 by Bertrand Desplanques, B. DESPLANQUES
Physics and Astronomy · #Current (fluid) #Form factor (electronics) #Kinematics #Nuclear physics research studies #Nucleon #Pion #Point (geometry) #Pulsars and Gravitational Waves Research #Quantum and Classical Electrodynamics #hep-ph #nucl-th

paper · pdf · doi:10.1142/s0217751x05023050

published as Int.J.Mod.Phys. A20 (2005) 1601-1606 · To appear in the proceedings of MENU04 (Beijing, Aug. 29- Sept. 4, 2004)

arxiv created 2004/11/08 · openalex publication_date 2005/04/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Calculations of form factors in different forms of relativistic kinematics are presented. They involve the instant, front and point forms. In the two first cases, different kinematical conditions are considered while in the latter case, both a Dirac-inspired approach and a hyperplane-based one are incorporated in our study. Numerical results are presented for the pion form factors with emphasis on both the low and high Q 2 range. A new argument is presented, explaining why some approaches do considerably much better than other ones when only a single-particle current is considered.

Citations

• Nucleon and pion electromagnetic form factors in a light-front constituent quark model
• Covariant nucleon electromagnetic form factors from the Goldstone-boson-exchange quark model
• Form factors in the “point form” of relativistic quantum mechanics: Single- and two-particle currents