Light-cone QCD predictions for elastic ed-scattering in the intermediate energy region
نویسندگان
چکیده
The contributions of helicity-flip matrix elements to the deuteron form factors are discussed in the light-cone frame. Normalized A(Q), B(Q), GQ(Q ) and T20 are obtained in a simple QCD-inspired model. We find that G + +− plays an important role in GQ(Q ). Our numerical results are consistent with the data in the intermediate energy region. 13.40.Gp, 12.38.Bx, 24.85.+p, 27.10.+h Typeset using REVTEX
منابع مشابه
Recalculation of Proton Compton Scattering in Perturbative QCD
At very high energy and wide angles, Compton scattering on the proton (γp → γp) is described by perturbative QCD. The perturbative QCD calculation has been performed several times previously, at leading twist and at leading order in αs, with mutually inconsistent results, even when the same light-cone distribution amplitudes have been employed. We have recalculated the helicity amplitudes for t...
متن کاملHigh-Q2 elastic ed scattering and QCD predictions.
In the framework of pertubative QCD it is argued that in the elastic edscattering at Q ∼ few (GeV/c) the light-cone-frame helicity-flip amplitudes could not be omitted. The obtained B A ratio of Rosenbluth structure functions is shown to be in a good agreement with experimental data. The high Q behavior of T20 is discussed. In a recent paper, Brodsky and Hiller [1] have made a general analysis ...
متن کاملQcd Phenomena and the Light-cone Wavefunctions of Hadrons
Light-cone Fock-state wavefunctions encode the properties of a hadron in terms of its fundamental quark and gluon degrees of freedom. A recent experiment at Fermilab, E791, demonstrates that the color coherence and shape of light-cone wavefunctions in longitudinal momentum fraction can be directly measured by the high energy diffractive jet dissociation of hadrons on nuclei. Given the proton’s ...
متن کاملDiffraction Dissociation in QCD and Light-Cone Wavefunctions∗
The diffractive dissociation of a hadron at high energies, by either Coulomb or Pomeron exchange, has a natural description in QCD as the materialization of the projectile’s light-cone wavefunctions; in particular, the diffractive dissociation of a meson, baryon, or photon into high transverse momentum jets measures the shape and other features of the projectile’s distribution amplitude. Diffra...
متن کاملQCD Technology: Light-Cone Quantization and Commensurate Scale Relations
I discuss several theoretical tools which are useful for analyzing perturbative and non-perturbative problems in quantum chromodynamics, including (a) the light-cone Fock expansion, (b) the e ective charge V , (c) conformal symmetry, and (d) commensurate scale relations. Light-cone Fock-state wavefunctions encode the properties of a hadron in terms of its fundamental quark and gluon degrees of ...
متن کامل