Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-09-20
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, no figures
Scientific paper
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, $T\propto s^{\alpha(t)}$, combined with a linear growth of the total cross-section, $\sigma_{tot}(s)\propto s$, violates elastic unitarity. Regge behaviour leads to a stringent bound on the growth of the total cross-section, $\stot (s) \leq 32\pi \alpha' \ln(s/s_0)$.
Kachelriess Michael
Plumacher Michael
No associations
LandOfFree
Remarks on the high-energy behaviour of cross-sections in weak-scale string theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Remarks on the high-energy behaviour of cross-sections in weak-scale string theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remarks on the high-energy behaviour of cross-sections in weak-scale string theories will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-722878