Analytic approximations of 2 → 2 processes with massive internal particles
Joshua Davies, Go Mishima, Kay Schönwald, Matthias Steinhauser
Abstract
A bstract We consider two-loop corrections to 2 → 2 scattering processes with massive particles in the final state and massive particles in the loop. We discuss the combination of analytic expansions in the high-energy limit and for small Mandelstam variable t . For the example of double Higgs boson production we show that the whole phase space can be covered and time-consuming numerical integrations can be avoided.
Topics & Concepts
PhysicsHiggs bosonPhase spaceLimit (mathematics)ScatteringBosonLoop (graph theory)Particle physicsQuantum electrodynamicsElementary particleVariable (mathematics)Statistical physicsMathematical physicsQuantum mechanicsMathematical analysisMathematicsCombinatoricsParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research