Rotational covariance and light front current matrix elements

Mar 29, 1993
20 pages
Published in:
  • Phys.Rev.D 49 (1994) 1500-1505
e-Print:
Report number:
  • PRINT-93-0301 (CARNEGIE-MELLON)

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Abstract:
Light-front current matrix elements for elastic scattering from hadrons with spin1 or greater must satisfy a nontrivial constraint associated with the requirement of rotational covariance for the current operator. Using a model ρ\rho meson as a prototype for hadronic quark models, this constraint and its implications are studied at both low and high momentum transfers. In the kinematic region appropriate for asymptotic QCD, helicity rules, together with the rotational covariance condition, yield an additional relation between the light-front current matrix elements.
  • hadron: elastic scattering
  • elastic scattering: hadron
  • kinematics
  • current: electromagnetic
  • momentum transfer
  • invariance: rotation
  • form factor
  • quark: mass
  • mass: quark
  • meson: model
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