Models of High Energy Processes
This book was originally published in 1980. Theoretical physics makes extensive use of models to test and develop intuition. This monograph seeks to provide an introduction to high-energy model making. Its aim is to explain the basic ideas in a form accessible to graduate students and other readers who have acquired a first-hand knowledge of quantum field theory and basic particle physics, including the elements of Regge theory. It describes major calculational techniques together with sufficient physical applications to illustrate their utility. No attempt has been made to be encyclopaedic, for an exhaustive treatment of every application would have created a volume too large for the simple pedagogic purpose intended.
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Asymptotic behaviour in perturbation theory
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5-function amplitude antiparton arise Bjorken Bjorken limit calculate cancellation coefficient consider constituents contour convergent corresponding coupling constant cross-section d-lines deep inelastic scattering diagram of fig discontinuity discussion Drell effects end point equation essential singularity evaluated example exchange exponential external momenta Feynman diagrams Feynman integrals Feynman parameters field theory Figure finite given gluon Gribov hadron handbag diagram hard scattering high energy ie prescription imaginary interactions internal lines ladder diagrams large momentum leading asymptotic behaviour leading logarithmic logarithmically divergent loop momenta Mandelstam Mellin transform momentum flows normal threshold numerator factors optical theorem parametrisation parton model perturbation theory Phys physical pinch contributions Pomeron possible propagators quantum quantum chromodynamics quark Regge cut Regge pole Regge theory Regge trajectory Reggeons regime region of integration renormalisable rungs scalar scale breaking scaling sets section 3.2 singular configuration slice spin subdiagram Sudakov techniques tion transverse two-particle unitarity vanish variables vertex