Eikonal Propagators for the High–energy Parton–parton Scattering in Gauge Theories
نویسنده
چکیده
By a direct resummation of perturbation theory in the limit of very high energy and small transferred momentum (the so–called “eikonal” limit), we derive expressions for the truncated–connected quark, antiquark and gluon propagators in an external gluon field, both for scalar and fermion gauge theories. These are the basic ingredients to derive “soft” high–energy parton–parton scattering amplitudes, using the LSZ reduction formulae and a functional integral approach.
منابع مشابه
Eikonal propagators and high – energy parton – parton scattering in gauge theories
In this paper we consider “soft” high–energy parton–parton scattering processes in gauge theories, i.e., elastic scattering processes involving partons at very high squared energies s in the center of mass and small squared transferred momentum t (s → ∞, t ≪ s, typically |t| ≤ 1 GeV). By a direct resummation of perturbation theory in the limit we are considering, we derive expressions for the t...
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تاریخ انتشار 2001