Final state interactions from Euclidean correlation functions

Maiani, L.; Testa, M.

doi:10.1016/0370-2693(90)90695-3

Final state interactions from Euclidean correlation functions

L. Maiani
(
- Rome U.
)
,
M. Testa
(
- Salento U.
)

1990

6 pages

Published in:

Phys.Lett.B 245 (1990) 585-590

Published: 1990

DOI:

10.1016/0370-2693(90)90695-3

View in:

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Abstract: (Elsevier)

We study the three-point euclidean correlation functions and derive a theorem relating their asymptotic behaviour in euclidean time and for infinite space volume to the threshold time-like form factor and the scattering length. We comment on the relation between our approach and that in which scattering lengths are related to finite volume effects on energy levels.

final-state interaction
correlation function: Euclidean
asymptotic behavior
form factor
scattering length
effect: finite size

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