2 \to n threshold production at tree level

Abstract

The threshold behavior of a theory with two coupled scalar fields $\chi$ and $\varphi$ is investigated. We compute the amplitude for two on-mass-shell $\chi$-particles to produce an arbitrary number of $\varphi$-particles at rest in the tree approximation.

14 pages in REVTEX, (Appendix removed) UW/PT-92-23

References in corpus (6)

• Summing tree graphs at threshold
• Summing One-Loop Graphs at Multi-Particle Threshold
• Summing one-loop graphs in a theory with broken symmetry
• Zeros of Tree-Level Amplitudes at Multi-Boson Thresholds
• Multiscalar production amplitudes beyond threshold
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• On threshold amplitudes II: Amplitudes nullification via classical symmetries
• Multiparticle tree amplitudes in scalar field theory
• Multiboson threshold production by fermion-antifermion pair and hidden symmetry
• Amplitude Zeroes in Collinear Processes or What Is Left from a Factorizable 2d Model in Higher Dimensions