Perturbative thresholds in the physical region

Details Perturbative thresholds in the physical region Perturbative thresholds in the physical region

1997-12-03

arxiv.org/abs/hep-ph/9712241v1

Eur.Phys.J.C5:167-174,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 + 1 pages, plain LaTeX 2e + PostScript, to appear in Z. Phys. C

Scientific paper

10.1007/s100520050258

We consider unstable-particle scattering in the context of 3-body processes.
We show that all partial-wave cross-sections are finite and positive, and the
total cross-section is proportional to the transverse size of space in the
region of on-shell particle exchange. We comment on the role of loop
corrections.

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