Remarks on the high-energy behaviour of cross-sections in weak-scale string theories
| dc.creator | Kachelriess, M. | |
| dc.creator | Plumacher, M. | |
| dc.date | 2001-09-20 | |
| dc.date.accessioned | 2026-07-07T03:45:19Z | |
| dc.date.available | 2026-07-07T03:45:19Z | |
| dc.description | We consider the high-energy behaviour of processes involving Kaluza-Klein (KK) gravitons of weak-scale string theories. We discuss how form-factors derived within string theory modify the couplings of KK gravitons and thereby lead to an exponential fall-off of cross sections in the high-energy limit. Further, we point out that the assumption of Regge behaviour for a scattering amplitude in the high energy limit, $T\propto s^{α(t)}$, combined with a linear growth of the total cross-section, $σ_{tot}(s)\propto s$, violates elastic unitarity. Regge behaviour leads to a stringent bound on the growth of the total cross-section, $\stot (s) \leq 32πα' \ln(s/s_0)$. | |
| dc.description | 5 pages, no figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0109184 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0109184 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/40888 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Remarks on the high-energy behaviour of cross-sections in weak-scale string theories | |
| dc.type | text |