| Issue |
EPL
Volume 81, Number 6, March 2008
|
|
|---|---|---|
| Article Number | 61002 | |
| Number of page(s) | 3 | |
| Section | The Physics of Elementary Particles and Fields | |
| DOI | https://doi.org/10.1209/0295-5075/81/61002 | |
| Published online | 25 February 2008 | |
The complex relation between production and scattering amplitudes
1
Centro de Física Teórica, Departamento de Física, Universidade de Coimbra - P-3004-516 Coimbra, Portugal
2
Centro de Física das Interações Fundamentais, Instituto Superior Técnico, Technical University of Lisbon P-1049-001 Lisboa, Portugal
Received:
30
October
2007
Accepted:
27
January
2008
The constraint implied by the unitarity relation 
is derived for a three-body production amplitude A that consists of a complex linear combination of elements of the two-body scattering amplitude T. We conclude that the unitarity relation does not impose a realness condition on the coefficients in the expansion of A in terms of T.
PACS: 11.80.Gw – Multichannel scattering / 11.55.Ds – Exact S matrices / 13.75.Lb – Meson-meson interactions
© EPLA, 2008
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