Details

Autor(en) / Beteiligte

• Hatzigeorgiu, N

Titel

Unitarization of instanton amplitudes

Ist Teil von

• Physical review. D, Particles and fields, 1995-03, Vol.51 (6), p.3090-3095

Ort / Verlag

United States

Erscheinungsjahr

1995

Quelle

American Physical Society [PROLA]

Beschreibungen/Notizen

• We extend an earlier numerical model of [ital S]-wave unitarization of perturbation processes to include instanton contribution in a way that bears resemblance to multi-instanton expansions. The results indicate that there is an initial growth of the unitarized cross section with the center-of-mass energy but it always remains small. Beyond a critical energy it decreases exponentially. When no perturbation processes are included, so-called half-suppression is seen; when such processes are also included, the suppression of the instanton amplitudes depends on the strength of the perturbative effects and can rise above half-suppression bounds, but not close to the unitarity limit.